The fifth season of Frasier originally aired from September 23, 1997 to May 19, 1998 on NBC.
Frasier returns from Acapulco after a torrid affair with a supermodel/zoologist who's sworn him to secrecy regarding her identity. No one believes Frasier when he finally divulges her identity, instead believing that Frasier's finally lost his marbles.
Frasier and Niles compete to buy their father the best birthday present, culminating with Niles buying Martin's old police horse and Frasier giving him a humongous television.
Everyone attends Niles' literary themed Halloween party, including Roz, who tells Frasier she may be pregnant.
Roz decides to keep her baby. Frasier prompts her to talk with the child's father.
The whole town is abuzz over "Frasier Crane Day" as Frasier celebrates his 1000th broadcast with a large outdoor gala.
Frasier is delighted to be a handpicked celebrity on a "luxury" cruise until he discovers it's luxurious in name only. Niles and Maris are on the outs after she tells him she'll be vacationing in Switzerland on their anniversary.
Frasier has a relationship with a high-profile criminal defense attorney, in which he finds himself in the more submissive role.
Frasier desperately tries to find out what went wrong when Sam breaks off their relationship.
Each member of Frasier's family tells a masseuse all about their eventful day, which includes Martin's participation in a church Christmas pageant and Niles' experience being trapped in an elevator.
Frasier tags along with Daphne to her favorite pub and realizes he's been missing a Cheers-like atmosphere ever since he left Boston. They find themselves at odds with one another when Daphne insists that Frasier stop frequenting "her" place.
Daphne accidentally finds an engagement ring in Martin's dresser, frightening Niles and Frasier with the spectre of "Stepmother Sherry."
It's re-negotiation time at KACL again. This time Frasier opts for ethics over avarice when he chooses do-gooder agent Ben (whose ideas include naming a bird at the zoo "Frasier Crane") over Bebe.
Niles and Maris' new counselor, Dr. Schenkman, advises Niles to inject some spontaneity into their relationship, inspiring Niles to surprise Maris in her bedroom. Niles isn't quite prepared for what he finds.
The Crane household and Daphne's good friend Annie take a weekend trip to a ski lodge, leading to romantic misunderstandings.
Lilith comes to Seattle after her husband leaves her for a man, and throws herself at Frasier. Frasier uses all his willpower to resist, but Niles isn't as strong.
The Cranes are reunited with a branch of the family when Frasier's cousin, Nikos, is getting married. First, Frasier has to soothe old wounds with Martin's sister-in-law, incurred when Frasier urged Nikos to pursue a career in juggling rather than medicine.
The whole radio station is buzzing over the incredibly attractive and talented new radio host, Dr. Clint Webber. Frasier tries desperately to find Clint's "Achilles heel," while Martin is thrown out of the only store in Seattle selling Eddie's favorite dog food.
Bulldog is falsely hailed as a hero for foiling a coffee shop robbery. Only Frasier knows what really happened, and the adulation heaped on Bulldog eats him up inside.
Frasier tries to deny that his attraction to a younger woman is purely physical.
Niles finally decides to ask Daphne out to dinner, but when the moment comes, he can't quite get up the nerve.
Roz is horrified to learn that Rick's family has a history of large noses. Meanwhile, Frasier can't bring himself to tell Daphne the earrings he bought for her aren't genuine sapphires.
Tired of struggling to find dates, Frasier and Niles host a singles party that culminates with Roz giving birth.
It's another raucous night for Frasier, as he needs to be in three places at once; a surprise birthday party, a Safari Club initiation meeting, and a date with a potential soul mate.
Frasier refuses to comply when the new station manager mandates that on-air talent must read commercials during their programs. Frasier leads his forces to "The Black Tower" to protest, reckoning that the might of the on-air talent will force management to accede to their demands.