"A Black Letter Day"
Season Four, Episode #13
#66 in Series
Series: Three's Company
Network/Country: ABC-TV / USA
Air date December 11, 1979
Production code
Written by Story by: Mark Chambers
Teleplay by: Kim Weiskopf &

Michael S. Baser

Directed by: Dave Powers
IMDB IMDb logo A Black Letter Day
Cast Information
Starring: John Ritter
Joyce DeWitt
Suzanne Somers
Don Knotts
Ann Wedgeworth
Richard Kline
Episode guide
Episode chronology
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Ralph's Rival The Reverend Steps Out
List of Three's Company episodes

A Black Letter Day is the thirteenth episode of Season Four of Three's Company, and the 66th overall episode of the series.

Note: This episode marks the last appearance of Ann Wedgeworth, the shortest stint of any of the series' regulars, with only 13-credited episodes. However, Wedgeworth only appears in 9 of these episodes.


Lana thinks Jack is having an affair with Janet or Chrissy after she reads an advice column and jumps to conclusions.

Plot summaryEdit

When Lana reads a letter in the advice column in the paper about a man living with two women and having an affair with one of them she decides that it's the trio. She confronts Janet with the letter and insinuates that it's Jack and Chrissy. She then talks to Chrissy and decides that it's Janet and Jack. She sees Larry at The Regal Beagle, shows him the letter and leaves when Jack arrives. Jack finally reads the letter and decides to teach the girls a lesson but it doesn't work because the girls have finally figured out that it isn't them at all.

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