Book 1

Veil of Lies

by Jeri Westerson

Published 28 October 2008
Crispin Guest has fallen far from his privileged position as a knight in medieval high society. Accused of treason, abandoned by former friends and allies, he has survived on the gritty streets of London by reinventing himself as "The Tracker," a private investigator for hire who can locate lost objects or uncover the clandestine lives of people.

When the secretive, wealthy merchant Nicholas Walcote hires Guest to investigate his alluring young wife Philippa for adultery, he discovers a seedy underworld of covert dealings and violent men of mystery. Philippa is indeed hiding something and she's not the only one. Guest soon learns that Walcote is rumored to be in possession of a mystical holy relic so powerful that some would even kill for it.

Guest must contend with his nemesis, Sheriff Simon Wynchecombe in the search for answers to the questions surrounding the mysterious Walcotes. With each new day comes another layer of intrigue and Guest quickly becomes entangled in a strange world of superstition, seduction, and murder.

Book 2

Serpent in the Thorns

by Jeri Westerson

Published 29 September 2009
After the French king's courier is killed by a crossbow in a tavern, a barmaid seeks the assistance of fourteenth-century detective Crispin Guest, who soon finds himself the prime suspect in the murder, one that could draw France and England into war.

Book 4

Troubled Bones

by Jeri Westerson

Published 11 October 2011

Book 6

Shadow of the Alchemist

by Jeri Westerson

Published 15 October 2013
""Creative and enthralling. If you enjoy authentic Medieval history combined with modern suspense, this one's for you." --John Lescroart Once a Knight of the Realm, Crispin Guest was stripped of his title and his lands and must now earn his meager living through his wits. With the help of his young apprentice, reformed thief Jack Tucker, Guest is known to certain populations as The Tracker, the man who can find anything--for a price. It is for that reason that Guest is sought out by Nicholas Flamel, an absent-minded alchemist. Both Flamel's wife and his apprentice are missing, and he wants Guest to find them and bring them home. Before he can even begin looking, Guest discovers that Flamel's house has been ransacked. Then Flamel's assistant turns up--dead, hanging from the rafters with a note pinned to his chest by a dagger. It is a ransom note that promises the safe return of his wife in exchange for the Philosopher's Stone, which is reputed to turn lead into gold and create the elixir of life. And the kidnappers aren't the only ones after it. From the highest nobility to Flamel's fellow alchemists, everyone is seeking the stone for themselves. Guest must rescue the missing wife and find the stone before it falls into unworthy hands"--

The Demon's Parchment

by Jeri Westerson

Published 12 October 2010
Former knight and nobleman Crispin Guest, now surviving as a detective in 14th century London, agrees to track down stolen parchments possibly connected with a series of brutal murders for a Jewish physician attending the Queen.

NO. 5 OF 6

Blood Lance

by Jeri Westerson

Published 16 October 2012