Knox chase on the case of the Valentine's day mystery

"KC Green is a small-town kid with a big-time imagination -- and an even bigger secret. He can see the pulp fiction detective he was named for from the 1930s & 40s Knox Chase on the Case novels, and no one else can. This old school gumshoe lands our hero into tons of small-time trouble, but when a mysterious stranger bumps into KC on Valentine's Day, a crime wave hits town. Someone is trying to steal a fortune, and they'll hurt anyone who gets in the way. It takes all of KC's wits, his invisible partner, and his best friends, Cat & Ben, just to stay alive in the Case of the Valentine's Day Mystery"--Goodreads.com.