Robin Williams 'Engaged' in Work Hours Before Death

The day before he was found hanged, Robin Williams was "completely engaged" in a conversation about work, a confidante tells TMZ. The source speculates that Williams' suicide was spontaneous, because during their discussion, Williams was asking quite a few questions about deals that were in the works. Williams was, however, "unhappy" at the time, the source says, "which he often was, but it was nothing unusual." Sources also tell TMZ no one saw the suicide coming, leading Williams' family to believe whatever set it off happened just before his death. (More Robin Williams stories.)