Here's what to expect from the new season of 'It's Always Sunny,' including a Mummers Parade memorial

It's Always Sunny in Philadelphia returns on August 17 for a record-extending 18th season. The new episodes will feature returning characters, ongoing gags, and topical satire, including a Mummers Parade memorial. Early reviews for the upcoming season have been mostly positive. Viewers are now looking for ways to watch the premiere online, as the gang returns with new tricks for this milestone season. The series continues its long run with fresh storylines and familiar faces.