Thread:Snowdog67/@comment-31677686-20180216164031/@comment-31677686-20180217162114

ANSWER : In summary, Bob arrived first. Tom got there next and the painting was still there, so Bob was not the thief, and neither was Tom. When Ann arrived, the painting was still there, but it was gone when she left. So Ann was the one who stole the painting. Chuck arrived last and discovered that the painting was gone.