Which Frasier episode is listed as overall episode number 90?

“Ham Radio” is listed as Frasier’s overall episode number 90.

The episode is season 4, episode 18, and originally aired on April 22, 1997. Its overall placement comes from counting the series’ episodes across its seasons: each of the first three seasons contains 24 episodes, so season 4 begins with episode 73. The 18th episode of that season is therefore number 90.

In “Ham Radio,” Frasier attempts to stage a classic live radio mystery to celebrate KACL’s 50th anniversary. His controlling direction drives the actors away, leaving Niles to perform multiple roles in the increasingly chaotic broadcast. The premise makes the episode a particularly fitting showcase for a sitcom centered on radio.

The number can be confused with production codes or season-and-episode notation. “Ham Radio” is commonly identified as 4.18, while its overall series number is 90. It aired well before the show’s 264-episode run concluded with the two-part series finale, “Goodnight, Seattle.”