Ichirin, Murasa and Kyouko aren't really suspects.How mean!What do you mean "taken" it...I won't get my hopes up, but what is it?If this were Kogasa's doing, it would be quite the surprise, but she doesn't have the brains for it.
I got it!!
Hmm... Is there any one who comes and goes often that could have a motive?
That careless Bishamonten must've lost it by accident!