Stacey Dooley is back - find out what she's investigating in her latest documentary

Stacey Dooley returns to TV on Wednesday night with a new investigation into stalking.

The TV star and filmmaker will discover more about the crime of stalking and hear some harrowing real-life accounts from victims about how it has impacted them.

Read more: Stacey Dooley not planning to marry Kevin Clifton

Here's all you need to know about Stacey Dooley: Stalkers, including how you can watch it.

When is Stacey Dooley: Stalkers on TV?

The new two-part documentary begins on Wednesday, 19 January, on BBC One at 10.35pm.

Episode two is also available on BBC Three from the same date and will air again on BBC One at the same time next week.

What will Stacey Dooley investigate in the new documentary?

Never one to shy away from a gritty subject, this time Dooley turns her attention to the crime of stalking and how it devastates the lives of its victims.

She said: "Prior to these films, I perhaps hadn’t taken into account just how truly devastating and life-changing stalking can be. Victims are often forced to change their lives entirely and often likened their normality to simply ‘existing’... These survivors deserve to be heard and prioritised."

In the first episode, Stacey explores the most common type of stalking, that committed by an ex-partner.

Read more: Stacey Dooley feels 'much better' for quitting Twitter

She meets a young woman going to court to find out whether her ex will be convicted of stalking her and another woman whose partner is being considered for early release after a vicious campaign against her.

On the perpetrator side, Dooley finds out about one man about to be released from prison after a stalking conviction, and a pilot accused of stalking his cabin crew ex.

Episode two sees Dooley investigate stranger stalking, how to put a stop to the crime, and whether prison or therapy is more effective.

Her work puts her in contact with a young dancer whose stalker fan has been arrested three times and still won't give up, a fraud investigator accused of using his work skills to cyberstalk a colleague, and a 62-year-old man who has been stalking a physiotherapist half his age for the last seven years.

As she finds out about a convicted stalker released from prison who immediately begins harassing his ex, Dooley realises that the nightmare often continues indefinitely for victims.

Which other subjects has Stacey Dooley investigated?

After rising to fame in the 2008 documentary Blood, Sweat and T-shirts, which followed a group of fashion-obsessed shoppers on a trip to India to discover more about the conditions in which fast fashion is made, Dooley landed her own series Stacey Dooley Investigates.

Her documentaries have seen her explore subjects including child soldiers, sex trafficking, tourism and its effects on industry employees across the world, and fanaticism in her hometown of Luton.

She has travelled to the US to explore women's prisons, drugs wars, homelessness, and the 2016 shootings at a gay nightclub in Florida.

Dooley has also presented programmes on the global financial crisis, missing and murdered women in Canada, a US anti-abortion summer camp and a hospital psychiatric ward.

Stacey Dooley: Stalkers airs on Wednesday, 19 January, at 10.35pm on BBC One.

Watch: Stacey Dooley 'doesn't want to marry' Kevin Clifton