Air date: 1/10/90

Relationships are tested as jealousy comes between not only Doogie and Wanda, but also Dr. and Mrs. Howser.

It Ain't over Till Mrs. Howser Sings

Air date: 1/17/90

A scare involving the results of her mammogram motivates Katherine to revive her '60s singing career at a nightclub's open-mic night.

Tough Guys Don't Teach

Air date: 1/31/90

Teaching a safe-sex class in high school isn't as intimidating for Doogie as one of the students – an upper class bully.

I Never Sold Shower Heads for my Father

Air date: 2/7/90

Vinnie is frustrated by his father's urgency to involve him in the family shower head business.

Doogie's Awesome, Excellent Adventure

Air date: 2/14/90

The “super cool” Griffin goes Doogie some fashion advice and encourages him to “borrow” his father's BMW.

Use a Slurpy, go to Jail

Air date: 2/28/90

A gang member holds Vinnie and Doogie hostage during a botched convenience store holdup in which Doogie is left to ponder his prejudices.

Whose Mid-Life Crisis is it Anyway?

Air date: 3/14/90

Dr. Howser decides to retire when his research failed to make an impact in the medical journals. Doogie tries to prescribe an attitude adjustment for his father.