Walker's Wallace Boden was last seen onscreen in the season 12 finale Eamonn Walker is back on Chicago Fire for one night and one night only. The beloved actor, 62, who exited the series after 12 seasons as a series regular last May,

Eamonn Walker is returning to his Chicago Fire post. First Deputy Commissioner Wallace Boden is back for one night only in the upcoming season 13 episode titled "Post-Mortem," airing April 16 at 9 p.m.

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.”