S4, E14: Susan encounters her ex-husband in a surprising situation and discovers that his life has changed dramatically, and a horrified Lynette finds out that the culprit behind the fire at Rick's restaurant is from her own family, but Tom refuses to believe the truth. Elsewhere, Bree begs Orson to turn himself in to the police, and their marriage cracks under the strain, while Gabrielle rents a room to a young artist.