Mary alice Young's son Zach is not her own. Zach's mother sold her son to mary alice (then called Angela) to take drugs. Later, Zach's biological mother gave up drugs and wanted her child back. After a quarrel, Paul killed Zach's biological mother by mistake. Somehow, their neighbor Martha Huber knew about it, so Mrs Huber sent mary alice an anonymous letter to threaten her. Mary alice felt that the secret had been discovered and could not bear it.

Bree's husband Orson once had a lover, monique. One night, Susan's boyfriend Mike helped monique repair the water pipe and went out temporarily because he needed to buy materials. In the meantime, Orson's twisted mother killed monique. When Mike came back, Orson gave Mike a wrench, which was also Mike's murder weapon. Later, Orson met Bree, only to find that Mike was Bree's neighbor. In order not to remind him of himself, Orson hit him with his car.