World-renowned pianist Diana Renard has a reunion with old Julliard classmates, Russ and Stephanie McMullen. Diana blames Stephanie for holding Russ back as a musician. When Stephanie confesses that she had lied about being pregnant to keep Russ away from Diana 15 years earlier, Russ and Diana spend the night together. Frank Prescott checks in with his 12-year-old son Anthony, a computer whiz. Frank is too busy with work to do any of the things he and Anthony had planned, so Anthony turns to hacking the hotel's computer system. Soon after Mark catches a purse-snatcher and becomes a local hero and his girlfriend Jill asks him to live with her, a newspaper reporter asks to write a story about his heroics. As Peter and Christine prepare to take Mark and Jill out, a police inspector arrests Mark for assault of an old girlfriend, a charge that Mark denies. Jill begins to doubt Mark's innocence, and the reporter writes a sensationalized story of a tarnished hero. When the charges are dropped

Former college friends Bob, Tom and Susan meet for a weekend reunion, all three having recently ended long relationships. When Bob and Susan sleep together, Tom's anger betrays his longtime love for Susan, and the reunion begins to disintegrate. Although Bob and Tom get into a fight, the three friends eventually reconcile. Meanwhile, Peter is jealous of Christine's affair with Adam Kirkwood, a wealthy, young, international businessman. Returning after a long mourning period for his late wife, the hotel's venerable chief of security, Art Patterson, believes that his assistant, Billy, is after his job. Patterson plants a bomb in the hotel basement. When George Sandler, a rich man with political aspirations, hosts a fund-raiser, Adam invites Christine and Peter. Trailing them is Mr. Rider, an FBI agent interested in Adam's illegal weapons shipments.

Learning that Christine's boyfriend, Adam Kirkwood, is the FBI's prime suspect in an arms smuggling operation, Peter takes Christine to Agent Rider, who informs her that George Sandler, a powerful politician, and Adam are plotting to sell arms to guerrilla forces in the Third World. After planting a bomb in the hotel basement, security chief Art Patterson anonymously tips off the hotel and personally disarms the bomb in order to make himself a hero. When Billy finds evidence pointing to Patterson, Patterson asks for Billy's resignation. Over Peter's objections, Christine agrees to plant an FBI listening device in Adam's bedroom. When Adam catches Christine, Sandler insists on killing her, but Adam arranges for Peter to take Christine to safety. At the hotel, Billy agrees to resign, but Patterson eventually confesses to Billy and leaves the hotel security in Billy's hands.

A convention of police chiefs includes Mrs. Cabot's old friend, the recently widowed Brian O'Connell from Atlantic City. Their friendship blossoms into romance, and Mrs. Cabot spends the night with Brian. Both are beginning to think about marriage. However, realizing she could never leave the hotel to be a police chief's wife, they decide on something less matrimonial, a couple weeks of fishing in Canada. Pretending to cram for an exam, Nick Miller, a college junior, has a rendezvous at the hotel with 38-year-old Kay Radcliff, who happens to be the mother of his college roommate, Todd Radcliff. Todd and his girlfriend, Denise, pay Nick a surprise visit and find Todd's mother sharing the hotel room. Todd is inconsolable, and Denise fails to convince him that his mother has the right to choose her own love life. Finally Kay explodes, telling Todd to grow up and face it like a man. Peter needs a gift for Christine's third anniversary at the hotel, but his duties leave Peter no time for sh