The Word Is Murder

I never read a book by Horowitz because I did not like his name 😂
I was proven wrong, yet again.

It's very meta: it's about a detective-writer writing a book while everything is happening, it's smart, well written, it has nice set of characters, no Harlan-Coben-type-violence or gruelling grizzle, a cozy really, and a good plot. (The only weak point being: whyever would the murderer expect the son to go home? That's no spoiler).