The Arconiacs can rejoice as their favorite amateur detectives are back on the case… along with a few new faces.

Molly Shannon was spotted Friday on the New York City set of Only Murders in the Building for the first time, along with co-stars Eva Longoria, Selena Gomez, Steve Martin and Martin Short. 

The Saturday Night Live alum donned a black satin top, tucked into matching pants with a gold starburst print, layered with a navy overcoat.

She was all smiles as she joined the cast on set at Moonlight Studios.

Shannon was added to the cast of season 4 in February, followed shortly after by Longoria, 49.

Molly Shannon was spotted Friday on the New York City set of Only Murders in the Building for the first time

The Saturday Night Live alum donned a black satin top, tucked into matching pants with a gold starburst print, layered with a navy overcoat. Shannon was added to the cast of season 3 in February, followed shortly after by Eva Longoria

Details about their characters have not yet been revealed.

The Desperate Housewives alum was also on set Friday, arriving in a dark green fleece and grey sweatpants.

Longoria completed the cozy look with a pair of black Ugg boots as she carried her laptop into the building.

Martin, 78, who stars in the series as actor Charles-Haden Savage, stepped out in a blue and gray plaid overcoat over a blue shirt as he waved at fans.

Short, 74, who plays Broadway director Oliver Putnam, also greeted the crowd with a wave while sporting a double-chested grey vest and dress shirt under a quilted coat.

Gomez, 31, who stars as artist Mabel Mora, was previously seen on set, sporting a black leather shearling jacket over a yellow sweater with gold hoop earrings.    

Gomez, Martin and Short play three friends and neighbors in the fictional NYC apartment building, The Arconia, who start a podcast as they begin investigating murders.

Also joining season 4 of Only Murders are Eugene Levy, Kumail Nanjiani and Zach Galianakis.

The Desperate Housewives alum, 49, was also on set Friday, arriving in a dark green fleece and grey sweatpants

Longoria completed the cozy look with a pair of black Ugg boots as she carried her laptop into the building

Steve Martin, who stars in the series as actor Charles-Haden Savage, stepped out in a blue and gray plaid overcoat over a blue shirt as he waved at fans. Martin Short, who plays Broadway director Oliver Putnam, also greeted the crowd with a wave while sporting a double-chested grey vest and dress shirt under a quilted coat

Selena Gomez, who stars as artist Mabel Mora, was previously seen on set , sporting a black leather shearling jacket over a yellow sweater with gold hoop earrings

Meryl Streep, Tina Fey, Da’Vine Joy Randolph and Michael Cyril Creighton will also return in their recurring roles. 

Season 3 ended on a cliffhanger when Charles’ stunt double Sazz Pataki (played by Jane Lynch) was found dead.

The upcoming fourth season will also take the show to Los Angeles. 

The first three seasons of Only Murders in the Building are available to stream on Hulu.