Doors by Ed McBain

Alex Hardy knows that doors can always be opened--you just need the right tools. The rising young New York burglar is ready for the jewelry heist of his life. There's only one problem. A door has been cracked open. It's a door inside of Alex, a door of love for a beautiful and honest woman. She's the only jewel he can't steal--and the one most likely to cost him his life.

Paperback, 1981

Goodreads: 3.53