Yes, it is. The 'John Wick' novel book is full of intense action scenes just like the movies. It delves deeper into the character's backstory, his past relationships, and what made him the cold - blooded assassin he is. The writing style is engaging and keeps you on the edge of your seat throughout the read.
The character of John Wick doesn't come from a comic book. The franchise was developed independently for the movies, featuring intense action and a compelling narrative that's not adapted from comic book source material.