on june 10, kate sutherland received a notification. person was detected inside her vacant apartment. >> open the video and saw a random person walking through my apartment, taking a video. it sent chills down my spine. reporter: it caught a person moving slowly in the dark. the building had been vacant for several days after a water main broke and flooded the building. kate ended her lease four days later after the video. how did they explain what happened? >> they didn't know how. they just said it was unauthorized. reporter: that was just the tip of the iceberg. on monday, a resident captured a worker using the bathroom inside his apartment. the real estate owner said a contractor was making repairs in a unit and was recorded taking items from the unit. the contractor was terminated immediately. in stephanie's case, thousands of dollars went missing from her bank account this morning. >> fraudulent checks cashed in my bank account for over $1500 each. reporter: she says her checkbook is in her vacant apartment. >> someone is rummagin

on june 10, at 2:27 a.m., kate sutherland received a notification -- a person had been detected insideer vacant apartment. >> i saw a random person just wandering through my unit, taking a video, on flash. and it was just -- it sent chills down my spine. reporter: the eerie video caught a person moving slowly in the dark. the building had been vacant for several days. after a water main broke and flooded the entire building. kate ended h lea f days >> h dhaened? they really didn't know how to explain it. they just kept saying that it was unauthorized. reporter: her story is the tip of the iceberg. , monday a resident captured a contractor using the bathroom inside her apartment and taking something on her way out. hines, the real estate company that owns a building, set in part a contractor was making repairs and one of the units, was recorded taking items from the unit. this contractor was terminated immediately. in stephanie's case, thousands of dollars went missing from her bank account this morning. >> two fraudulent checks cashed in my account, my bank account. both of them over $