**A gruesome murder plunges Patrick and Ingrid into a criminal underworld …**
An absorbing new case for crime-solving duo Patrick Gillard and Ingrid Langley.
**Patrick and Ingrid are an excellent team … dramatic and exciting. — Booklist**
An undercover **police officer is found brutally mutilated in the woods** , his body marked with the initials RK. The Serious Organised Crime Agency sends Patrick and Ingrid to investigate. But when they dig deeper, the case takes an even darker turn.
Their friend, DCI Carrick, learns that his estranged father— **long presumed dead** —is not only alive but tied to a dangerous criminal network. As Robert Kennedy’s shadow looms over both cases, Carrick fears the connection is more than coincidence.
Can Patrick and Ingrid uncover the truth before they too **fall victim to a ruthless killer**?
Perfect for fans of **gripping police procedurals, psychologically rich characters, and jaw-dropping twists**. Dive into the Gillard and Langley series today – where no one is safe.
**The Langley and Gillard Murder Mystery Series**
Book 1: A MURDER OF CROWS
Book 2: DEATH OF A RAVEN
Book 3: BRASS EAGLE
Book 4: WHO KILLED COCK ROBIN?
Book 5: ROOK SHOOT
Book 6: GALLOWS BIRD
Book 7: A HANGING MATTER
Book 8: DEAD TROUBLE
Book 9: SO HORRIBLE A PLACE
Book 10: TAINTED GROUND
Book 11: COBWEB
**BOOK 12: BLOOD SUBSTITUTE**
A Langley and Gillard Murder Mystery is published every month. Get news on the next release by signing up to Margaret Duffy’s mailing list.
**Praise for MARGARET DUFFY:**
‘An action-packed mystery that’s part British cozy, part 007 thriller.’ Booklist
‘Duffy is as delightful as Veronica Heley.’ Library Journal
‘A good mystery is a good mystery. And this is one.’ Publisher’s Weekly
‘Gillard and Langly showcase their superspy routine well, exhibiting a bit of humour and palpable tension.’ Library Journal