Tainted Obsession by Olivia Jaymes

Cameron Houston may have found the perfect woman in the least likely of locations – the office. Shelby is the new administrative assistant and she seems to like him, too. Before long, they’re dating and having a wonderful time together. He can definitely see a future with her.
Shelby is enjoying her new relationship with Cam. He’s the kind of guy she could fall hard for. She’s never had this sort of connection with anyone else.
But someone else is devoted to Shelby, too. They’ve given anonymous gifts, tried to hide a camera in her apartment, and even broken in to steal her personal items. Cam is determined to find out who it is and put a stop to it.

The obsession takes a deadly turn when an attempt is made on Shelby’s life…and there isn’t anything Cam wouldn’t do to protect the woman he loves.