Nicola Walker’s Acclaimed British Crime Drama Has Six Seasons of Gripping Mysteries Available to Watch for Free

British crime drama lovers searching for their next compelling series have a critically acclaimed detective thriller waiting to be discovered, with six seasons available to stream completely free.

Unforgotten, starring Nicola Walker and Sanjeev Bhaskar, has earned widespread praise for its intricate mysteries, emotionally powerful storytelling and outstanding performances.

Unlike conventional police dramas that focus on newly committed crimes, this ITV series investigates cases buried in the past, where long-forgotten secrets can change lives decades later.

With an impressive ensemble cast and a different mystery unfolding each season, it offers the kind of suspenseful television that keeps viewers watching episode after episode.

Nicola Walker Delivers One of Her Most Acclaimed Performances

Nicola Walker has become one of Britain’s most respected television actresses through her performances in The Split, Annika and Last Tango in Halifax.

However, her portrayal of DCI Cassie Stuart in Unforgotten remains among her most celebrated roles.

The Guardian described her performance as “career-best”, recognising the emotional depth and understated determination she brings to the character.

Cassie is a detective whose compassion for victims and their families is matched by her relentless pursuit of answers.

Alongside her is DI Sunil “Sunny” Khan, played by Sanjeev Bhaskar, familiar to audiences from Goodness Gracious Me and The Kumars at No. 42.

Their partnership provides the emotional foundation of the show’s first four seasons.

Rather than relying on dramatic confrontations, the two detectives approach investigations with patience, intelligence and an understanding of the human suffering behind every case.

Every Season Uncovers a Different Mystery From the Past

Set in London, Unforgotten follows detectives investigating historic murders and disappearances that have remained unresolved for years.

Each investigation gradually connects seemingly unrelated individuals whose lives have been shaped by secrets they believed would never resurface.

The storytelling moves between police inquiries and the personal histories of those involved, revealing how a single event can leave consequences stretching across generations.

What makes the series particularly compelling is its attention to the people behind the mysteries.

Suspects, witnesses and victims’ families are portrayed as complex individuals rather than simple pieces of a criminal puzzle.

This approach gives the drama an emotional weight that distinguishes it from more conventional detective programmes.

An Outstanding Cast of Familiar British Television Faces

Beyond Walker and Bhaskar, Unforgotten has featured an impressive collection of established performers.

Sir Tom Courtenay appeared in the first season, earning a BAFTA Television Award for his performance.

Mark Bonnar joined the second season as Colin Osborne and subsequently received a BAFTA Scotland award for his role.

The series has also continued to evolve through changes to its central detective team.

From the fifth season, Sinéad Keenan joined the cast as DCI Jessica “Jessie” James, working alongside Sunny Khan.

The new partnership brought a different dynamic to the investigations while preserving the show’s focus on carefully constructed mysteries and believable characters.

Where to Watch All Six Seasons of Unforgotten

For viewers who appreciate intelligent British crime dramas, Unforgotten offers a satisfying combination of suspense, character development and emotional storytelling.

Its six seasons provide a substantial viewing experience, with each investigation offering a fresh story and a new collection of characters.

The series is currently available to stream free on ITVx.

With Nicola Walker’s acclaimed performance, Sanjeev Bhaskar’s understated detective work and mysteries that unfold layer by layer, Unforgotten is an excellent choice for anyone who enjoys crime dramas that are as emotionally engaging as they are suspenseful.