The longtime co-star of the FXX sitcom “It’s Always Sunny in Philadelphia” has done extra duty before in her own series – Fox’s “The Mick” – and she’s now doing it again. ABC’s seriocomic “High Potential” premieres today, casting Olson as crime-scene cleaner Morgan, a single mother who solves cases in her own unconventional manner.

The longtime star of “It’s Always Sunny in Philadelphia” is a brilliant crime-solving maid in this new ABC procedural.

It's Always Sunny in Philadelphia' breakout Kaitlin Olson chats with ET about her role as Morgan in the new dramedy, ‘High Potential,’ premiering Sept. 17 on ABC. Olson, who stars in and produces the new series,

Spoilers ahead for the series premiere of High Potential on ABC. Kaitlin Olson is best known for playing Sweet Dee on FXX's It's Always Sunny in Philadelphia for the better part of two decades, but she has a brand new project in the 2024 TV schedule before It's Always Sunny In Philadelphia Season 17 is ready in the 2025 TV schedule.

Olson leads the new ABC crime show High Potential, which premieres on the network on Tuesday, September 17, at 10 pm ET/PT. Based on the French TV show HPI, High Potential follows Morgan, a cleaning lady with an IQ of more than 160 who uses her knowledge and insights to help the Los Angeles Police Department solve cases.