The sky overhead was turning the color of wet asphalt.

I pressed the call button on my steering wheel and dialed Luis at the front desk.

He answered on the second ring.

“Mr. Collins,” Luis said, his voice low and professional.

“Luis, my sister just went up the service elevator,” I said. “Is there anyone with her?”

There was a brief pause on the line.

“A man in a grey suit walked in right behind her, sir,” Luis said. “He didn’t check in at the desk.”

“Did you stop him?” I asked, my grip tightening on the steering wheel.

“I tried, but he claimed he was with her,” Luis replied. “They got into the elevator before I could pull up the camera feed.”

“Call building security immediately, Luis,” I said. “Do not let anyone else up to my floor.”

“I am on it right now, Mr. Collins,” he said.

I hung up and negotiated the tight turn onto the exit ramp.

My apartment building was three blocks away, its glass facade reflecting the dark storm clouds.

I pulled into the residential parking garage, bypassing the valet.