Paul Rudd makes a triumphant and unexpected return to Only Murders in the Building.

This article contains spoilers forOnly Murders in the Buildingseason 4 episode 4.

Only Murders in the Buildinguses its large cast of regulars and guest stars to tie storylines together.

Only Murders in the Building – “The Show Must…” - Episode 301 – Curtain up on Season 3! And Leading Man down! After Ben Glenroy’s collapse on stage, Charles, Oliver & Mabel piece together the show’s first days with a suspicious cast & crew to determine if foul play was involved. Spoiler alert… Ben (Paul Rudd), shown. (Photo by: Patrick Harbron/Hulu)

but maybe Ben isnt.

Mabel finds this information while scanning Lorettas (Meryl Streep) Instagram.

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Glen Stubbins is much different from Ben Glenroy.

Glen is high energy, rough around the edges, and willing to do just about anything for work.

Its not a shock thatOnly Murders in the Buildingfound a way to bring him back.

Rudd is one of Hollywoods biggest commodities.

Concussions requires a body before they can commit to a service for one of their own.

Youre probably wondering whether Glen will appear again somewhere down the road this season.

Steve Martin, Selena Gomez, and Martin Short are big enough on their own to carry a show.

Having all three has been truly special.

Theres no need to bring in more star power.

Rudds return is a riveting highlight of season 4!

Playing Ben or Glen, it doesnt really matter.

Hes just as funny in either role.

New episodes of Only Murders in the Building season 4 premiere Tuesdays on Hulu.