Boden is back at Firehouse 51. Eamonn Walker , who left “ Chicago Fire ” at the end of Season 12, will return for his first time since his 2024 exit, appearing in the April 16 episode, titled “Post-Mortem.”

Per the official description, Boden has been tasked by Commissioner Grissom (Gary Cole) “to run a post-incident analysis following a house fire that collapsed with a firefighter.”

Walker portrayed First Deputy Commissioner Wallace Boden from Seasons 1-12 of the NBC series. On the Season 12 finale, Bodon left 51 as he accepted a new job as the Chicago Fire Department’s Deputy Commissioner.

“We’re so excited to have our beloved Chief Boden back, and the episode, titled ‘Post-Mortem,’ is a thrill ride unlike any we’ve done before,” says showrunner Andrea Newman. “Told with flashbacks and unique POVs, Chief Boden leads our team on a search to discover the how, who, and why of a fierce firefight that ended in disaster.”

Popular on Variety

Following Walker’s exit, Dermot Mulroney joined the cast as the new head of 51, Chief Dom Pascal.

“Chicago Fire” is produced by Universal Television, a division of Universal Studio Group, in association with Wolf Entertainment. The series was the first of the “One Chicago” franchise, created by Derek Haas and Michael Brandt, launching in 2012. It led to the current spinoffs, “Chicago Med” and “Chicago P.D.” All three are part of the Dick Wolf universe.