ACE

A few hours later, they arrived at Gina's boarding house. He himself opened Gina's door with a key. As soon as they entered the house, he first observed if the alarm system he was setting would sound. However, there was no high-pitched warning to meet them.

"Do you remember when you set the alarm?" He immediately asked Gina.

"Of course, I set the alarm before I left."

"Are you sure, Gina?"

"I'm sure, because I always--"

"Who else did you give access ...