Carly Thomas Smith

With Halloween approaching, Susan must reveal her secret Internet side job to Mike; Juanita grows suspicious of Gabrielle's sudden interest in Grace; Bree learns a secret about Keith.

Rachel is irritated to learn that her handsome new workplace rival, Gavin (recurring guest star DERMOT MULRONEY), has been invited to her birthday party. Meanwhile, Ross struggles to keep lascivious Joey away from Emma's beautiful new nanny, Molly (MELISSA GEORGE - "Thieves"). Also, Phoebe coaxes her boyfriend, Mike (recurring guest star PAUL RUDD), into helping her care for a litter of baby rats that were born in her cabinet.

Recent scandals leave the Graysons on edge; Emily targets the psychiatrist responsible for institutionalizing her as a child; Declan and Jack face a tough decision.

Charlie has second thoughts after setting Alan up with their new neighbor (guest star Brooke Shields).

Larry has a scheduling conflict, takes issue with work associates and hosts a pair of ungrateful house guests.