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Chicago Med season 12 episode 6 guest cast welcomes back some familiar faces

We're going to see some familiar faces pop back up in Chicago Med season 12 episode 6 as Lenox finally returns and a few former guest stars come back, too.
ByReed Gaudens
CHICAGO MED -- "Lessons in Chemistry " Episode 1206 -- Pictured: (l-r) Luke Mitchell as Dr. Mitch Ripley, Jessy Schram as Dr. Hannah Asher
CHICAGO MED -- "Lessons in Chemistry " Episode 1206 -- Pictured: (l-r) Luke Mitchell as Dr. Mitch Ripley, Jessy Schram as Dr. Hannah Asher | George Burns Jr/NBC

After a particularly dark and gripping episode that fans can't stop talking about, Chicago Med is back with another new episode that's probably one of the most highly anticipated of season 12 so far. The emergency department at Gaffney has been without the unique energy and expertise of Dr. Lenox as she's off on a sabbatical, but she's finally coming back this week.

Sarah Ramos returns from her maternity leave in Chicago Med season 12 episode 6 as the trailer showed Lenox coming back to Gaffney and reuniting with Ripley in person. She returns to an emergency department that's in utter chaos, and she's surely going to get back to work and handle as much as she can, but as we saw in the trailer, she's reveling in seeing Ripley first.

Beyond Lenox dropping back into the series, Chicago Med also welcomes back a few more familiar faces to the season 12 episode 6 guest cast. The medical drama has been known to bring certain case-of-the-week patients back into the fold in future episodes, and that's exactly what's happening as a couple blasts from the past sweep back into the emergency department.

Chicago Med - Sarah Ramos as Dr. Caitlin Lenox, Luke Mitchell as Dr. Mitch Ripley
CHICAGO MED -- "Lessons in Chemistry " Episode 1206 -- Pictured: (l-r) Sarah Ramos as Dr. Caitlin Lenox, Luke Mitchell as Dr. Mitch Ripley | George Burns Jr/NBC

Frederick and Ian return in Chicago Med season 12 episode 6

Chicago Med season 12 episode 6 finds French Stewart reprising his role as Frederick "Freddy" Lambert, returning for the first time since season 10. For those who might not remember Stewart's role, Frederick is the fiancé of Margaret, Charles' late mother with whom he had a strained, complicated relationship. We learned of Stewart's return in season 12 earlier this month.

As the synopsis for the episode teased before its airing, Charles will be forced to face some "painful family memories" while making some kind of decision. Since Frederick is back, Charles' decision revolves around something involving his mother. But Frederick isn't the only familiar face returning to Gaffney this week. Frost also gets a blast from the past in the form of Ian Walcott.

Justin Prentice guest stars in the role he originated last season as Frost's Nick of Time costar Ian. He dropped by Chicago with the hopes of convincing Frost to join the sitcom's reboot since it would only get off the ground with Frost's involvement. While Frost initially agreed, he changed his mind and put the sitcom reboot in his past. However, what brings Ian back this time will be a surprise to Frost.

CHICAGO MED -- "Lessons in Chemistry " Episode 1206 -- Pictured: (l-r) An-Li Bogan as Dr. Annie Wu, Iman Benson as Imogen
CHICAGO MED -- "Lessons in Chemistry " Episode 1206 -- Pictured: (l-r) An-Li Bogan as Dr. Annie Wu, Iman Benson as Imogen | George Burns Jr/NBC

Aside from those two guest stars reprising their roles, Chicago Med season 12 episode 6 also features a pair of guest stars from earlier in the season popping back up. In episode 3, Tyler Barnhardt and Olivia Daponde played the unhoused couple Matthew Kaufman and Harper Doherty. They were facing insurmountable obstacles that seemed impossible.

The couple, who are expecting a baby, had nowhere to go, which sprung Asher and Ripley into action to keep them at Gaffney to receiving medical care and a roof over their heads. Both Matthew and Harper were facing medical issues that needed attention despite their inability to pay for such care, but the Gaffney team made sure to pull some strings to help them out. We're getting an update on the couple this week, and hopefully it's good news.

The latest episode of Chicago Med also features some new faces in the guest cast, including Iman Benson as Imogen Drwady, Christine Syron as Dr. Marion Hathaway, Kelly AuCoin as Lance Carpenter, and Marnee Carpenter as Melody Bedford. We can also expect Orlagh Cassidy as Miranda and Rebecca Breeds as Sloan, just in time for them to clash with Lenox.

Chicago Med airs Wednesdays at 8/7c on NBC and streaming next-day on Peacock.

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