On the day she returns to active duty with the Serial Crimes Unit, Detective Inspector Anjelica Henley is called to a crime scene. Dismembered body parts from two victims have been found by the river. The modus operandi bears a striking resemblance to Peter Olivier, the notorious Jigsaw Killer, who has spent the past two years behind bars. When he learns that someone is co-opting his grisly signature - the arrangement of victims’ limbs in puzzle-piece shapes - he decides to take matters into his own hands.

When pregnant Saffron Cutler moves into 9 Skelton Place with boyfriend Tom and sets about renovations, the last thing she expects is builders uncovering human remains. The remains of two bodies, in fact.

On July 17, 1939, Eileen Alexander, a bright young woman recently graduated from Girton College, Cambridge, begins a brilliant correspondence with fellow Cambridge student Gershon Ellenbogen that lasts five years and spans many hundreds of letters. But as Eileen and Gershon's relationship flourishes from friendship and admiration into passion and love, the tensions between Germany, Russia, and the rest of Europe reach a crescendo. When war is declared, Gershon heads for Cairo and Eileen forgoes her studies to work in the Air Ministry.

Defense Intelligence Agency operative Matt Drake broke a promise. A promise that cost three people their lives and crippled his best friend. Three months later, he's paralyzed by survivor's guilt and haunted by the memories of the fallen. Matt may have left Syria, but Syria hasn't left him. In the midst of his self-imposed exile, Matt is dragged back into the world of espionage and assets that he tried to forget. A Pakistani scientist working for an ISIS splinter cell has created a terrifying weapon of mass destruction.

A Karin Slaughter Will Trent thriller collection featuring Fallen, Criminal, and Unseen