Another freebie from Barry Eisler's backlist: A Clean Kill in Tokyo (previously published as Rain Fall)
Name: John Rain.
Specialty: Natural Causes.
Base of operations: Tokyo.
Half American, half Japanese, expert in both worlds but at home in neither, John Rain is the best killer money can buy. You tell him who. You tell him where. He doesn't care about why...
Until he gets involved with Midori Kawamura, a beautiful jazz pianist--and the daughter of his latest kill.
Includes a note from the author introducing the new edition. This is book #1 in the John Rain assassin series, though each entry is written as a standalone and you can read them in any order you like.
Get the audio for $1.99 from Audible.