The new episode, “Lab Rats,” marksthe start of a lengthy hiatus for the latest911season.

Denny was adopted by the LA first responder and local rocket scientist after his birth mother gave him up.

Pratt has also appeared in911several times before this.

911 Season 8, Episode 15 Cast members

His only other major credit is in Passionflix’sDriven.

Knoebel can also be seen inMonsters,1923(read ), andAmerican Pastoral.

Rick Worthy - John Hartman

Longtime actor Rick Worthy plays John Hartman.

Askyler Bell as Mara Driskell smiling in 911

Worthy has over 70 credits, includingDuplicity,Star Trek: Enterprise, andGossip Girl.

Krishnan may be familiar to fans for his work inThe Dictator,The Lazarus Effect, andTurning Red.

Kuwano’s other credits includeI Think You Should Leave With Tim Robinson,In the Vault, andCriminal Minds.

Declan Pratt as Denny Wilson in a collared shirt in 911

Regan has appeared inThe Rookie,The Last Ship, andJohn Wick.

Marsha Warfield - Toni Wilson

Marsha Warfield plays Toni Wilson.

Warfield can also be seen as a part ofThe Upshawscast,Night Court, andThe Richard Pryor Show.

Brian Knoebel as Allen Reid in a full hazmat suit in 911

Massiah is best known for her work inPitch,Mistresses, andSecrets and Lies.

Chris Wu

Chris Wu returns to911as a police officer working for the Los Angeles Police Force.

Wu previously appeared in Season 3 of the hit series.

Rick Worthy as John Hartman in military fatigues in 911

Wu’s previous work includesDead Space,The Upshaws, andEscape the Night.

Cistaro’s filmography includes credits onSense8,All Day and Night, andUgly Betty.

Sean T. Krishnan as Director Francis Banting standing in the rain in 911

Sadie Kuwano as Roz in hazmat gear in 911

Bridget Regan as Moira Blake in 911

Marsha Warfield as Toni Wilson looking down at her phone in 911

Corinne Massiah as May Grant smiling in the sunshine in 911

Chris Wu in a police officer outfit in 911

Anthony Cistaro standing in a suit with a stern look in 911

911 Season 8 Episode 12 Cast & Guest Stars In ‘Disconnected’ (Photos) - Paula Marshall, George DelHoyo & More

911 Season 8 Episode 13 Cast: Guest Stars & Featured Actors (Photos)

911 Season 8 Episode 14 Cast & Guest Stars In ‘Sick Day’ (Pictures) - Bridget Regan, Sadie Kuwano & More

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