When Alan and Ruth are cast as lovers in a play written by a new tenant, Hilary, a jealous Rigsby decides to take up acting.

Rigsby tries to find a woman through an ad in the personals column and receives a surprising response.

Philip arranges a blind date for Alan, so he can be alone with Ruth, who's been let down by her latest suitor.

Rigsby tries to spook Alan by telling him that the boarding house is haunted.

Rigsby has to choose between his pride and his stomach when Philip challenges his ability to go without food for three days.

Rigsby reluctantly joins a communal fitness craze.

A well-bred new tenant brings out Rigsby's aristocratic aspirations.

Rigsby tries to impress Ruth with a fancy new car.

Rigsby, Alan, Philip and Ruth go out to an upmarket restaurant (which has a strict dress code) for Ruth's birthday. Rigsby borrows his new lodger Spooner's suit, without his permission.

Rigsby spends Christmas alone, but both Alan and Philip return early looking for some solitude for romance.

Ruth becomes indignant with Marilyn, the new tenant, who is an exotic dancer with an unusual prop in her act.

Rigsby jumps to a drastic conclusion when a hypochondriac tenant is taken to the hospital.

Rigsby persuades Ruth to impersonate his estranged wife so he can collect an inheritance from his great uncle.

Rigsby has to tell an ill-tempered wrestler to turn down the volume on his radio.

Even the callous Rigsby becomes concerned over a depressed new tenant who has suffered a series of business and personal problems.

Rigsby finally proposes to Ruth when he receives his long awaited divorce papers.

Alan wears an earring to attract the opposite sex, which Rigsby disapproves of. Alan sneaks Maureen into his room; Rigsby hears her and ejects her.

Rigsby jumps to the conclusion that Ruth has fallen in love with him.

Rigsby tries to seduce a new tenant while fending off bill collectors.

Alan becomes engaged to a girl from a snobbish family.

Ruth befriends a young couple who have moved in, fleeing from her disapproving father.

Rigsby persuades a tenant behind on his rent to hypnotize Ruth and plant the idea she's madly in love with Rigsby.

Rigsby is sceptical but intrigued by a ritual which Philip shows him - banging his spear on the ground to summon a woman.

Rigsby returns from his holidays to find that Ruth has returned and that an infant is being passed around for care.

Rigsby convinces his new tenant, a pious Welsh student, that Philip is in need of spiritual guidance, but it's Rigsby who sees the light.