Death at One Blow

by Henrietta Hamilton

Published 28 January 2021
Brimming with wartime secrets and family quarrels, Death at One Blow is the second in Henrietta Hamilton’s Sally and Johnny Heldar mystery series.


Needing a break from summer in the city, Sally and Johnny Heldar leave London for the countryside. Tasked with sorting out two jumbled personal libraries in a country estate, the couple are looking forward to a holiday break filled with books, fresh air, and reconnecting with long time friend Sir Mark.


But upon their arrival, the Heldars become privy to tensions within the house, and soon the pair find themselves at the centre of another mystery.

The Two Hundred Ghost

by Henrietta Hamilton

Published 19 November 2020
The antiquarian bookshop at 200 Charing Cross Road is rumoured to have a ghost. Despite the scares and supposed sightings, Sally Merton is happy to go about her job as normal.


Rather than ghosts, her real concern is the ghoulish Mr Butcher. Rude and rough, Butcher has made more enemies than friends while working at the Heldar family’s shop.


But one evening, things become a little too suspicious for Sally’s liking. With no one else in the upstairs rooms, a spectre is spotted — the next morning, Butcher is found dead at his desk.


While Scotland Yard is called in to handle the case, Sally undertakes her own investigation with the help of Johnny Heldar.


Can the pair solve the mystery? Or will the supernatural overcome their sleuthing?


The Two Hundred Ghost was first published in 1956 and is part of Agora Books’ Uncrowned Queens of Crime series.

At Night to Die

by Henrietta Hamilton

Published 25 November 2021

When the Laird Charles Buchanan dies suspiciously in his remote mansion-house in rural Scotland, the Heldars step in to help investigate. But as they explore the House of Affray, Sally and Johnny uncover more mysteries and family secrets than they anticipated.

Can the crime-solving duo determine if this was a burglary gone wrong, or might they discover something far more sinister is going on at Affray?