Was your spouse on Ashley Madison? A new breed of private eye is ready to help.

The phone is ringing, and they already know that whoever is calling is feeling suspicious."This is Kelly," the intern answers in a soothing voice. In her three days on the job, she's learned that she'll be listening to people's problems every time she answers the phone at Trustify -- a D.C.-based start-up that uses an app to connect customers to low-cost private investigators.