Knock Knock, Who's Dead?: An Algorithm, Espresso & Bad Dad Jokes Mystery

By K.J. Hayes

The punchlines are landing, but the victims aren't laughing.

Private investigator Kevin Hayes finds himself tangled in a case where the humor is fatal and the suspects are hiding behind complex lines of code. Armed with a vintage phone, a mug of steaming pitch-black coffee, and a relentless supply of groan-worthy bad dad jokes, Kevin has to crack the digital puzzle before the killer executes their final script.

In a neon-lit city where technology and comedy collide, the system is rigged. Can Kevin decode the killer's motives, or will this be his final punchline?

Knock, knock. Who's dead? Find out in this gripping, witty page-turner by K.J. Hayes.

Grab your copy of An Algorithm, Espresso & Bad Dad Jokes Mystery today and dive into the chaos

• Format: Paperback
• Language: English
• ISBN: B0HFG9Y6BP
• ISBN13: 9798192978368
• Release Date: August 2026
• Publisher: Independently Published
• Length: 50 Pages
• Weight: 0.31 lbs.
• Dimensions: 0.1" x 8.5" x 11.0"