Murder on Pleasant Avenue by Victoria Thompson

Two men who used to be cops have become private eyes.  They will take the cases the police shrug aside.  They work in the areas of town that are dangerous.  It's common for people with money to suddenly have a wife or child kidnapped and they must pay a ransom to get them back.  If they go to the police, they will kill them...

Berkley and Net Galley let me read this book for review (thank you).  It will be published April 28th.

They are asked to find a young woman who went missing.  She just disappeared one afternoon and has been gone a few days.  The man asking them to look has hopes of marrying her.  They begin the search by asking a lot of questions.  Then they find out she has returned but won't speak to anyone.

When they discover where she was held, Gino goes to brace the man he knew took her.  He finds him in the room, dead.  And a cop comes in right behind him and arrests him for the murder.

His partner gets him out of jail and now they have to find the murderer to clear Gino.  They don't have a large staff.  There are the two detectives, a secretary, and the wife of the other detective.  But they accomplish a lot.

The man in love confesses to the crime but they know he didn't do it.  He's afraid his girlfriend might have done it.  So are the detectives...