What's the Worst That Quad Happen? is the seventh episode of Season 3. It premiered March 18, 2017 to 1.25 viewers.
After staying at their grandmother's house, the quads hope to receive a present as they always do after a long day of good behavior. The quads received a drone that on their watch crashes into a neighbor's yard. Their objective is to get the drone back and return everything back to normal.
- Lizzy Greene as Dawn Harper
- Casey Simpson as Ricky Harper
- Mace Coronel as Dicky Harper
- Aidan Gallagher as Nicky Harper
- Allison Munn as Anne Harper
- Brian Stepanek as Tom Harper
- Kyla Drew Simmons as Mae Valentine
- Dale Raoul as Trish Harper
- April Audia as Officer Freeman
- The episode title is a play on the phrase, "What's the worst that could happen?"
- This episode aired after a hiatus of one month and one week.
- This marks the first appearance of Tom's mother, Trish, after being mentioned in many previous episodes.
- When Trish is saying "That little fellow lives in a pineapple!", she may possibly be referring to the popular Nickelodeon show SpongeBob SquarePants
- This is the first episode to be featured on "The After Party".
- This episode is very similar to Lab Rats:Drone Alone.
- This is the eleventh hiatus.