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The Enemy Within

Season 4 Episode 4 | 1hr 10m 28s

Cristina allies herself with Carlos and pushes him to speed up his plans to marry Ana, who fights for her line at Velvet. Rita continues to hide her illness from Pedro, though he is consumed by his new duties and barely even notices.

Aired: 10/30/25
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  • Season 4
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  • Velvet Season 1
Ana hesitates on Carlos’ proposal. Pedro supports Rita’s health struggle.
Cristina conceals a secret. Clara’s reunion with Mateo falters. Rita hides her illness.
Now a renowned designer, Ana dates pilot Carlos. A new fashion line begins.
Rita’s health crisis unfolds. Ana’s fashion line faces challenges. Mateo finds a lead.
Pedro sacrifices for Rita’s health. Ana supports her friend. Clara reconnects with Mateo.
Alberto and Ana’s love triumphs, but Cristina’s downfall leaves Velvet’s fate uncertain.
Ana’s fashion line earns praise. Marco claims credit. Mateo pursues a discovery.
Ana leaves Velvet after betrayal. She plans her wedding. A secret surfaces.
Ana cancels her wedding as a past figure returns. Velvet anticipates changes.
Ana’s fashion line needs Mateo’s return, causing tension. Clara faces her former husband.
Extras
As the suspects' secrets unravel, the trio struggles to find a clear motive.
Tanika confronts the ladies about their involvement in the case and Judith has an epiphany.
The cast give an inside look at The Marlow Murder Club Season 3.
A documentary exploring how future doctors learn to see the human stories behind the diagnosis.
Get ready for The Marlow Murder Club Season 3 on Sunday, Sept. 6, 2026, 8/7c.
The Marlow Murder Club returns to MASTERPIECE Mystery! for Season 3 on Sunday Sept. 6, 2026, 8/7c.
Look back at the romances in Grantchester including Geordie and Cathy, Leonard and Daniel, and more.
Relive your favorite characters' first episodes and last episodes.
The characters of Grantchester are more than just a tight-knit bunch of friends — they're family.
That's a wrap! Get a behind-the-scenes glance at the emotional last day of filming.