Book 1

The Falcon's Malteser

by Anthony Horowitz

Published 22 May 1986
An award-winning detective spoof by the author of "Granny". When a dwarf comes into the office and leaves a package, Tim Diamond, the world's worst private dick, is faced with his toughest case yet. And when the office is ransacked, Tim and his too-smart younger brother Nick open the package to discover a box of Maltesers. Nick's quick-thinking saves the Maltesers from Tim's stomach, but can he solve the mystery? Who was the dwarf and why was he murdered only days after his visit? Why is the Fat Man after the Diamonds? And how can a box of Maltesers really be the key to a three-and-a-half million pound fortune? Antony Horowitz is the author of "Groosham Grange" (winner of the 1990 Lancashire Book Award), "Granny" (shortlisted for the 1995 Children's Book Award) and "South by South East". He has also edited "The Puffin Book of Horror Stories", and has written numerous screenplays, including "Robin of Sherwood", "Poirot" and "Anna Lee".

Book 2

Public Enemy Number Two

by Anthony Horowitz

Published 3 November 1997
Wisecracking young Nick Diamond finds himself sharing a prison cell with Johnny Powers, Public Enemy No.1. His only chance of rescuing the situation is to nail the Fence, the country's master criminal. First, though, Nick has to get out of jail.

Book 3

South by South East

by Anthony Horowitz

Published 14 March 1991

Book 4

The Blurred Man

by Anthony Horowitz

Published 8 July 2002

The Diamond Brothers – the world's worst private detectives – are on the case!

Lenny Smile has been run over by a steamroller. He used to run a children’s charity called Dream Time, financed by millionaire Joe Carter. Now Carter wants to know what happened to Smile … and to his money. Unfortunately, he’s hired the Diamond Brothers to solve the mystery!


Book 5

The French Confection

by Anthony Horowitz

Published 8 July 2002
"Tim," I asked. "What's the French for 'murder'?" Tim shrugged. "Why do you want to know?" "I don't know." I stepped onto the escalator and let it carry me down. "I've just got a feeling it's something we're going to need." When the hard-up Diamond brothers, Tim and Nick, win a weekend for two in Paris, it looks as if their luck is taking a turn for the better. But looks can be deceptive. No sooner have they arrived in the French capital than the brothers are up to their necks in danger. There's a nasty smell in the air and it's not the cheese. If Nick and Tim aren't careful, their dream holiday could end up being a nightmare from which they'll never wake up...

Book 6

There's been a murder on a remote island … but the Diamond Brothers are on the case!

When the Diamond Brothers receive an invitation to a school reunion on a remote Scottish island, things seem to be looking up. But Nick’s got a bad feeling, and it’s not indigestion. And when he meets their fellow guests, the feeling only gets worse – especially when they start dying in ever more bizarre ways!


A hilarious story about the world's worst detectives by the bestelling author of the Alex Rider series, Anthony Horowitz.

Meet the Diamond Brothers, the world's most defective detectives, by the author of the number one bestselling Alex Rider series. Wisecracking young Nick Diamond finds himself sharing a prison cell with Johnny Powers, Public Enemy No.1. His only chance of rescuing the situation is to nail master criminal the Fence. But first, Nick has to get out of jail…


Two Diamond Brothers cases in one sparkling volume by the author of the number one bestselling Alex Rider series.

Meet the Diamond Brothers, the world's worst private-detective agency, in this Chandler-esque spoof by Anthony Horowitz, creator of the bestselling Alex Rider series. Tim Diamond is the world's worst private detective, but unfortunately for his younger brother Nick, the cases keep coming in. First a man runover by a steamroller, and then a remote Scottish island where the guests are dying. Can Nick and Tim find the murderers before it's too late?


Two hilarious Diamond Brothers investigations in one volume by the number one bestselling author of the Alex Rider series, Anthony Horowitz.

Meet the Diamond Brothers, the world's worst private-detective agency, in this Chandler-esque spoof from the creator of the bestselling Alex Rider series. Life as the younger brother of the world's most defective detective can be tough – and these two adventures will test Nick to the full. What connects them? Murder! And if the Diamond Brothers don't play their cards right, they could be next…


A hilarious story about the world's worst detectives by the bestelling author of the Alex Rider series, Anthony Horowitz.

Meet the Diamond Brothers, the world's most defective detectives, by the author of the number one bestselling Alex Rider series. Tim is broke. So when a mysterious stranger offers him a wad of money for his overcoat, it seems like a stroke of good fortune. But there are worse things than being broke. Being shot, for one – which is what happens to the stranger, and could soon be the fate of the Diamond Brothers…


A hilarious story about the world's worst detectives by the bestselling author of the Alex Rider series, Anthony Horowitz.

Meet the Diamond Brothers, the world's most defective detectives, by the author of the number one bestselling Alex Rider series. When a dwarf comes into the office and leaves a package, Tim Diamond, the world's worst private-detective, is faced with his toughest case yet. The office is ransacked and the package is found to contain simply a box of Maltesers. Who was the dwarf … and why was he murdered shortly after his visit?


South By Southeast

by Anthony Horowitz

Published 1 September 2005
From the # 1 New York Times bestselling author of the Alex Rider series. 

It looks like Tim, the world’s worst private detective, and Nick, his brainy kid brother, are in trouble again. They’re dead broke. But money is the least of their worries when a mysterious man bursts into their office and offers Tim a wad of cash for his coat. Minutes later, the stranger is dead and Nick and Tim are left to puzzle over his final words. What could he have meant by "suff bee suff-iss"? Or was it "south by southeast"? Neither one seems to make much sense, but the Diamond brothers will have to figure it out, and fast! Whoever killed the stranger is now after Nick and Tim!

Three of Diamonds

by Anthony Horowitz

Published 5 May 2005
From the # 1 New York Times bestselling author of the Alex Rider series. 

What would Tim Diamond, the world's worst private detective, dowithout his quick-thinking brother Nick? The bumbling detective and his kid brother are at it again in these three hilarious, fast-paced mysteries. Whether it's finding out who flattened a philanthropist with a steamroller in The Blurred Man, outsmarting Parisian drug smugglers on a vacation gone miserably wrong in The French Confection, or catching the murderer behind a deadly class reunion in I Know What You Did Last Wednesday, there's never a dull moment with this crimesolving duo around. Find out if Nick can get to the bottom of these mysteries before Tim messes everything up, or worse, gets them both killed.

Meet the Diamond Brothers, the world's worst private-detective agency in four hilarious and action-packed stories from the creator of the Alex Rider series. eBook available.

It’s a dangerous life being the younger brother of the world’s worst private detective – but Nick Diamond has survived … so far. However, these four mysteries are set to test his survival instincts to the full: a school reunion on a remote Scottish island, a dream holiday to Paris, an investigation into the whereabouts of a man in a blurry photo and the high profile visit of a world famous singer. What connects them? Murder! And if the Diamond Brothers don’t play their cards right, they too could end up dead…

It's Christmas and the Diamond Brothers - the world's most defective detectives - are back with a new case to solve in this hilarious spoof detective tale.

Tim Diamond and his younger brother Nick are flat broke. So when they're hired to investigate an anonymous death threat made to world-famous pop singer and movie actress Minerva, they jump at the chance. However, the Greek celebrity seems to have plenty of enemies - so the question is, which one actually wants her dead? Meanwhile, Tim needs to resist Minerva's amorous advances and focus in the matter in hand...

A hilarious new story about the world’s worst detectives, by the bestselling author of the Alex Rider series, Anthony Horowitz.

Private investigators Tim and Nick Diamond haven’t had a case for three months and are down to their last cornflake. So when a glamorous woman comes into their office offering them a pile of cash to find her missing father, they think Christmas has come – only it turns out they are the turkeys! Before they know it, they are caught up in a case involving bike-riding hitmen, superhackers and a sinister far right organisation, the White Crusaders. The Diamond Brothers are in the soup and in it over their heads. With thrills and spills, and jokes on every page, this new Diamond Brothers novel will have young readers howling with laughter.