Samantha's Secret Spell

 is the ninth episode of the sixth season and the 179th episode of the Bewitched series. The episode was completed by September 30, 1969.

Plot
After Darrin bans Endora from his house, Endora opts to permanently change him into a mouse at the stroke of midnight. To avert the transformation, Samantha desperately seeks a counterspell in a race against the clock.

Spells

 * Endora - to transform Darrin into a mouse
 * ''At this hour the day doth die,
 * ''Spirits howl and spirits cry,
 * ''There is a mortal within this house,
 * ''When I wave my hand,
 * Make him a mouse!

General

 * This episode is a partial remake of the season two episode, We're in for a Bad Spell.

Casting

 * This is Bernie Kopell's first appearance as Postlethwaite, the Apothecary, who runs a shop named "Postlethwaite's Potent Potions". He appears four times as this character throughout the series.
 * This episode marks the final appearance of Jean Blake on Bewitched.

Cast

 * Elizabeth Montgomery as Samantha Stephens
 * Dick Sargent as Darrin Stephens
 * Agnes Moorehead as Endora
 * David White as Larry Tate
 * Sidney Clute as Ralph Jackman
 * Bernie Kopell as Mr. Apothecary
 * Erin Murphy as Tabitha Stephens
 * Jerry Rush as Guard
 * Jean Blake as Betty