Chicago Med

CHICAGO MED -- "What You Don?t Know" Episode 405 -- Pictured: (l-r) Adam Petchel as Tim Burke, Nick Gehlfuss as Will Halstead, Devin Ratray as Tom Burke -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 5 live stream: Watch online

Chicago Med season 4, episode 5 photos: What You Don’t Know

Chicago Med season 4, episode 5 synopsis and promo: What You Don’t Know

Chicago Med’s Halstead twist is One Chicago moment of the week

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago ratings report: Week of October 17

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago week in review: Week of October 17

CHICAGO MED -- "Backed Against The Wall" Episode 404 -- Pictured: (l-r) Colin Donnell as Connor Rhodes, Norma Kuhling as -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 4 takeaways: Backed Against The Wall

CHICAGO MED -- "Backed Against The Wall" Episode 404 -- Pictured: Torrey DeVitto as Natalie Manning -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 4 recap: Backed Against The Wall

CHICAGO MED -- "Backed Against The Wall" Episode 404 -- Pictured: (l-r) Colby Lewis as Terry McNeal, Brian Tee as Ethan Choi -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 4 preview: Backed Against The Wall

CHICAGO MED -- "Backed Against The Wall" Episode 404 -- Pictured: S. Epatha Merkerson as Sharon Goodwin -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 4 live stream: Watch online

CHICAGO MED -- "Backed Against The Wall" Episode 404 -- Pictured: (l-r) Torrey DeVitto as Natalie Manning, S. Epatha Merkerson as Sharon Goodwin -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 4 photos: Backed Against The Wall

CHICAGO MED -- "Backed Against The Wall" Episode 404 -- Pictured: Yaya DaCosta as April Sexton -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 4 synopsis: Backed Against The Wall

CHICAGO MED -- "Heavy Is The Head" Episode 403 -- Pictured: Marlyne Barrett as Maggie Lockwood -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 3 preview: Heavy Is The Head

CHICAGO MED -- "Heavy Is The Head" Episode 403 -- Pictured: (l-r) Heather Headley as Gwen Garrett, Nate Santana as Jimmy Lanik -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 3 live stream: Watch online

CHICAGO MED -- "Heavy Is The Head" Episode 403 -- Pictured: (l-r) Nick Gehlfuss as Will Halstead, Peter Mark Kendall as Joey Thomas -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 3 photos: Heavy Is The Head

CHICAGO MED -- "Heavy Is The Head" Episode 403 -- Pictured: S. Epatha Merkerson as Sharon Goodwin -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 3 synopsis and promo: Heavy Is The Head

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago ratings report: Week of October 3

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago week in review: Week of October 3

CHICAGO MED -- "When To Let Go" Episode 402 -- Pictured: (l-r) Torrey DeVitto as Natalie Manning, Colin Donnell as Connor Rhodes -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 2 takeaways: When To Let Go

CHICAGO FRANCHISE -- Season: 2015 -- Pictured: (l-r) "Chicago P.D." top row; Marina Squerciati as Officer Kim Burgess, Brian Geraghty as Officer Sean Roman, Jesse Lee Soffer as Detective Jay Halstead, LaRoyce Hawkins as Detective Kevin Atwater, Elias Koteas as Detective Alvin Olinsky, Amy Morton as Desk Sgt. Trudy Platt, Patrick John Flueger as Officer Adam Ruzek bottom row; Jon Seda as Detective Antonio Dawson, Jason Beghe as Sergeant Hank Voight, Sophia Bush as Detective Erin Lindsay; "Chicago Fire", Yuri Sardarov as Brian ?"Otis"? Zvonecek, Jesse Spencer as Matthew Casey, Taylor Kinney as Kelly Severide, Eamonn Walker as Chief Wallace Boden, Dora Madison Burge as Jessica ?Chill? Clinton, Monica Raymund as Gabriela Dawson, Kara Killmer as Sylvie Brett, Joe Minoso as Joe Cruz, Christian Stolte as Randy ?Mouch? McHolland, David Eigenberg as Christopher Herrmann; "Chicago Med" top row: S. Epatha Merkerson as Sharon Goodwin, Nick Gehlfuss as Dr. Will Halstead, Brian Tee as Ethan, Torrey DeVitto as Dr. Lily Manning, Oliver Platt as Dr. Daniel Charles, Colin Donnell as Connor Bradhaw; seated: Yaya DaCosta as Nurse April Sexton, Rachel DiPillo as Dr. Sarah Reese (Photo by: Mark Seliger/NBC)

Rate the One Chicago Crossover event

CHICAGO MED -- "When To Let Go" Episode 402 -- Pictured: (l-r) Jesse Spencer as Matthew Casey, Yaya DaCosta as April Sexton, Kara Killmer as Sylvie Brett -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 2 recap: When To Let Go

CHICAGO MED -- "When To Let Go" Episode 402 -- Pictured: (l-r) Yuri Sardarov as Brian "Otis" Zvonecek, Oliver Platt as Daniel Charles -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 2 preview: When To Let Go

CHICAGO MED -- "When To Let Go" Episode 402 -- Pictured: Oliver Platt as Daniel Charles -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 2 live stream: Watch online

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago stars preview this week’s Chicago Crossover

CHICAGO MED -- "When To Let Go" Episode 402 -- Pictured: (l-r) David Eigenberg as Christopher Herrmann, Colin Donnell as Connor Rhodes -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 2 photos: When To Let Go

CHICAGO MED -- "When To Let Go" Episode 402 -- Pictured: Brian Tee as Ethan Choi -- (Photo by: Elizabeth Sisson/NBC)

Chicago Med season 4, episode 2 synopsis and promo: When To Let Go

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago week in review: Week of September 26

ONE CHICAGO -- Pictured: "One Chicago" Key Art -- (Photo by: NBCUniversal)

One Chicago ratings report: Week of September 26