Harlan Coben had sneaky cameo in Netflix's Missing You that fans won't have spotted it

Harlan Coben appears to have made a sneaky cameo in the Netflix adaptation of his novel Missing You - and you probably didn't realise it.

Premiering on New Year's Day, Missing You is the latest of Coben's mystery-thriller books to make the jump onto screen, following the success of Fool Me Once, The Stranger and Stay Close.

Based off his 2014 book of the same name, Missing You follows a detective who discovers her estranged fiancé on a dating app a decade after he went 'missing'.

Watch the trailer below:

Starring Rosalind Eleazar as Detective Inspector Kat Donovan, she is determined to figure out what happened to her missing fiancé Josh (Ashley Walters), which then leads her to reopen the 'unsolved mystery surrounding her father's murder'.

Lenny Henry, Harlan Coben regular Richard Armitage, Mary Malone and Jessica Plummer also feature in the series.

Like Fool Me Once - which went on to be the eighth most-viewed English-speaking show of all time - Missing You is also proving to be hugely popular amongst viewers, with the five-episode series currently holding the top spot on the streamers Top 10 TV programmes in the UK at the time of writing.

But how many of these viewers spotted the sneaky cameo from author Coben himself?

Harlan Coben makes a tiny cameo in the series (Lia Toby/Getty Images)

For those who are yet to spot the blink-and-you'll-miss-it appearance, Coben can be seen during the series' opening credits, which features a number of missing person's posters.

Coben's picture can be seen to the left of the screen, while Radio Times adds that a number of employees from Quay Street Productions, the company behind the author's Netflix adaptations, are also included.

Did you spot this one?

The author isn't the only person to make a cameo in the series either, with viewers also surprised to see podcaster and social media personality GK Barry (real name Grace Eleanor Keeling) pop up on their screens.

Coben can be seen on the left hand side (Netflix)

Barry has a tiny role as the character Vanessa, who is a foot cam girl in the series. The 25-year-old previously revealed in an interview with Cosmopolitan how the cameo came about, explaining that producers reached out to her management team with the role.

"They approached my manager and said, ‘We’re doing this new Netflix show, and we’d love Grace to be a little part in it.’ And I thought, ‘Well, I’m not going to say no’," she explained.

"So, we got on a call, and they were explaining who my character was, and it made me laugh so much because it’s very on brand.

"They gave me a brief outline of what it was about and read me the lineup of people [involved] and I thought, ‘I absolutely will do that.’ I just wanted to do it because I thought it was kind of iconic. I want to build the CV up so my parents cannot moan about anything!"

Missing You is available to stream on Netflix.