Locked Room - A Katla KillFile

See more by Martyn V. Halm

Available at Select Retailers

About the author

Martyn V. Halm

Martyn V. Halm lives in Amsterdam with his wife Maaike, two children, two cats, and countless imaginary characters vying for attention.


Writing realistic crime fiction is hard work, especially when you're a stickler for verisimilitude. When your protagonist is a seasoned killer, research can take you right up to Nietzsche’s abyss. Luckily, things get easier after the first few killings...

Apart from being an accomplished prevaricator, Martyn already possessed an eclectic variety of skills that qualified him to write the Amsterdam Assassin Series. Skills he shares with his deadly fictional characters...