Wrenley’s eyes widened ever so slightly, and she nodded. “Or she had a key to the building and knew the security code. Which the perp could’ve gotten from Dr. Strobel at the murder scene.” “What’d she take from Dr. Strobel’s office” Wrenley cocked her head. “Why do you keep saying ‘she’?” Derrick studied her; she knew. “You know about my past. That’s why you sent your partner out

