• Taylor Kinney, Natalie Dormer and Ed Westwick attend the People's Choice Awards 2016 at Microsoft Theater in Los Angeles, California.

Taylor Kinney, Natalie Dormer and Ed Westwick attend the People's Choice Awards 2016 at Microsoft Theater in Los Angeles, California. (Photo : Getty Images/Frazer Harrison)

A turf war will escalate in "Chicago Fire" Season 5 episode 6 titled "Telling Her Goodbye." Truck and squad members will find themselves caught in the middle as unsuspecting hostages.

A group of armed local gang members will take cover and will assume control over Firehouse 51. Making the situation even worse is one of the infiltrators who will be wounded.

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Featured in "Telling Her Goodbye" are Jesse Spencer as Matthey Casey, Taylor Kinney as Kelly Severide, Monica Raymund as Gabriela Dawson, Kara Killmer as Sylvie Brett, David Eigenberg as Christopher Hermann, Yuri Sardarov as Brian Zvonecek, Joe Minoso as Joe Cruz, Christian Stolte as Randall McHolland, Miranda Rae Mayo as Stella Kidd and Eammonn Walker as Wallace Boden. Ralph Abbas, Keston John and Giorgio Johnson will play a teacher, a Turk and Akeil, respectively, in the episode.

"Chicago Fire" Season 5 episode 6 titled "Telling Her Goodbye" will air on March 21, Tuesday, at 10:00 p.m. on NBC. Here is a sneak peek: