Brain Drain

 is the ninth episode of the shows First season which was first broadcast on May 18, 1991.

Summary
Ferguson convinces himself he is a genius after an IQ test. Clarissa tries to prove him wrong by joining him on the game show Brain Drain.

Cast

 * Melissa Joan Hart as Clarissa Darling.
 * Jason Zimbler as Ferguson Darling.
 * Sean O'Neal) as Sam Anders.
 * Elizabeth Hess as Janet Darling.
 * Joe O'Connor as Marshall Darling.