Extras

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Previously On Unforgotten

Preview: S4 | 2m 27s

Get a refresher on the dramatic events of Season 3 and the harrowing finale.

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Where We Left Off

Clip: S4 | 1m 59s

Take a look back on where we left off before the explosively dramatic new season.

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Official Teaser

Preview: S4 | 1m 30s

The most dramatic season yet begs the question: who exactly is fighting for justice?

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Preview

Preview: S4 Ep6 | 30s

Despite a tragic turn of events, the team narrows down the suspects.

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Cassie & Sunny's Partnership

Clip: S4 Ep6 | 2m 14s

Nicola Walker and Sanjeev Bhaskar reflect on Cassie and Sunny's enduring friendship.

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Preview

Preview: S4 Ep5 | 30s

Cassie and Sunny interview two of the suspects again and get closer to the truth.

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Preview

Preview: S4 Ep4 | 30s

Cassie and Sunny discover Walsh was chased by all four suspects on the night in question.

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Cassie's Journey

Clip: S4 Ep4 | 2m 6s

Nicola Walker walks us through the emotional journey of Cassie Stuart over the years.

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The Suspects

Clip: S4 Ep3 | 2m 50s

New crime, new suspects. Meet the murder suspects of Season 4!

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Preview

Preview: S4 Ep3 | 30s

Cassie and Sunny interview the four suspects, who all deny knowing the victim.

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Preview

Preview: S4 Ep2 | 30s

Cassie and Sunny identify four potential suspects who trained as police officers together.

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The Murder

Clip: S4 Ep2 | 2m 27s

Nicola Walker and Sanjeev Bhaskar describe the gruesome murder in Season 4.

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Sunny's Backpack

Clip: S4 Ep1 | 1m 23s

Sanjeev Bhaskar explains the social media hype about Sunny's iconic backpack.

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The Music

Clip: S4 Ep1 | 3m 42s

Join Sanjeev Bhaskar on a tour of Abbey Road Studios, where the show music is recorded.