If you’re in search of a solid genre romp, ITV has added four seasons of a Roswell-set alien mystery series to entertain you this weekend.

Based on Melinda Metz’s Roswell High series of novels, The CW sci-fi drama Roswell, New Mexico is about a bunch of extraterrestrial beings who infiltrate small-town America – except, they’re the good guys.

With a third and fourth season that have never aired in the UK before, the first season kicks off with the return of Liz Ortecho, a scientist played by Jeanine Mason, who finds not much has changed in her hometown.

Amid government cuts in biomedical research, Liz is forced back home to live with her father after first leaving town in the wake of her younger sister Rosa’s death.

Many of her classmates from her high school days are still stuck in Ro

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