'Alien: Covenant' star Katherine Waterson has called on director Sir Ridley Scott to finish the sci-fi trilogy.

The 44-year-old actress appeared in the second instalment of the 'Alien' prequel trilogy in 2017 - which followed on from 2012's 'Prometheus' - as space explorer Daniels opposite Michael Fassbender's android David, and though she isn't sure if she'd be needed for a third film, she's called on the 86-year-old filmmaker to finish the story for good as she'd happily watch as a fan.

Speaking with Inverse, Waterson said: "Keep David coming. [He's] just this amazing character. I like to think that Daniels made it out of the pod, but I'm not sure.

"I just love that world. And Ridley is a dream. He's an incredible person and a great collaborator. I'd personally love to work with him again, but even if I wasn't involved, I'd just love to go to the cinema and watch it."

When it hit cinemas, 'Alien: Covenant' wasn't received warmly by critics or general audiences, but fans have started to look back more kindly on the blockbuster in recent years.

Due to this resurgence, the 'Fantastic Beasts and Where to Find Them' star feels like now is the right time to complete the prequel trilogy.

She continued: "I really felt that with 'Covenant', that just with every passing year there seemed to be more people that are attached to it, and they come up to me to talk to me about it. And I, as a fan, feel the exact same way."

Scott first boarded the franchise with the original 'Alien' in 1979, but left the series to work on other projects like 'Blade Runner' and 'Legend'.

Following his departure, the story of 'Alien' was continued by an assortment of directors, including James Cameron, David Fincher and Jean-Pierre Jeunet, though Scott recently admitted he wishes he took full ownership of the I.P. after the his original film proved to be such a critical and commercial hit.

In an interview with Deadline, Scott said: "We were asleep at the wheel. My advisors, who frankly no longer are with me, were asleep at the wheel, certainly. And I partly blame myself, except I was busy making other films. And so it was let go and it shouldn't have been."

In 1986, Cameron helmed the action-packed sequel 'Aliens' before passing the torch to Fincher and Jeunet, who helmed 'Alien 3' and 'Alien: Resurrection' in 1992 and 1997 respectively.

Scott later returned for the prequel 'Prometheus', which the 'Gladiator II' director co-wrote with Damon Lindelof, and said he was inspired to revist the sci-fi franchise after Cameron's 'Aliens' proved to stand the test of time and became one of the more popular entries into the series.

Scott explained: "Years later, I saw this bloody film that they keep playing every night somewhere on the globe, on all the platforms. There's life in the best, yet.

"That's why I sat down with the great writer Lindelof, and we reconstructed a resurrection of the era, with 'Prometheus', and how it evolved from 'Alien'."