DESPERATE HOUSEWIVES - "Excited and Scared" - As Halloween approaches, Susan is forced to reveal her secret, sexy internet side job to a shocked Mike; Juanita becomes suspicious of Gabrielle's sudden interest in Grace; Lynette becomes concerned about Tom's mother's memory lapses; Bree learns a secret about Keith; and Paul is encouraged to take wife Beth out on a date in order to light a spark in their unromantic relationship, on "Desperate Housewives," SUNDAY, OCTOBER 31 (9:00-10:01 p.m., ET) on the ABC Television Network. (ABC/DANNY FELD) FELICITY HUFFMAN