museum employees after hours, even the museum's director. >> i was never verbally told that, to the best of my knowledge. i know -- i'm sure there was a policy written somewhere. i'm sure it was. but it wasn't the culture of the place for the most part. people came in and out of there fairly regularly. i mean at least once a month we let someone in. >> reporter: so it was not unusual for rick to hear that buzzer go off. on this night, rick says he had no doubt it trereally was the boston police at the entrance. >> they were standing there in their hats and coaches and badges. they looked like police. i buzzed them into the museum. and one of them came right over to my desk and one of them kind of stood in the alcove right there, just looking around. didn't seem particularly odd to