The Tunnel Rats - Stephen Leather

Two murders, thousands of miles apart: one in London, one in Bangkok.

The bodies are brutally mutilated, an ace of spades impaled upon their chests. In Washington, a US senator receives photographs of the corpses. And realises that his past has come back to haunt him.

Nick Wright is the detective trying to solve the mystery of the double killing. His hunt for a motive takes him to the Vietnam, where the American tunnel rats fought the dirtiest battle of the war against the Viet Cong.

But his search places him in grave danger with a killer determined to protect the secrets of the tunnels. At whatever cost . . .