Gator Done is the twentieth episode of the fourth season of Scorpion , and the ninetieth episode of the series overall.
Team Scorpion heads to bayou to track down an alligator and stop a mosquito-born outbreak. Paige teaches Walter the concept of a "white lie". Toby must save Cabe's life after he's shot with a tranquilizer by Walter. Sly and Ralph help Patty deal with mean girls in her school.
- Elyes Gabel as Walter O'Brien
- Katharine McPhee as Paige Dineen
- Robert Patrick as Cabe Gallo
- Eddie Kaye Thomas as Toby Quinn-Curtis
- Jadyn Wong as Happy Quinn-Curtis
- Ari Stidham as Sylvester Dodd