Netflix drama Heartstopper.Based on the graphic novel by Alice Oseman, Heartstopper is a coming-of-age teen romance series about high school students Charlie Spring (Joe Locke) and Nick Nelson (Kit Connor).Colman’s involvement in the series has been a secret until the show debuted today (April 22), appearing as Nick’s mother Sarah at the end of the first episode.The character is seen at several points throughout the series, offering emotional support to her son as he struggles to come to terms with his feelings.So the secret is out… Olivia Colman stars as Nick Nelson's wonderful mum, Sarah, in Heartstopper! pic.twitter.com/IPdBOrSOUP— Netflix UK & Ireland (@NetflixUK) April 22, 2022Viewers have shared their surprise at the reveal, with many impressed how Netflix managed to actually keep Colman’s role a secret.“Olivia Colman as Sarah Nelson in Heartstopper is a+ casting,” one viewer wrote.Everyone during episode 1 of #Heartstopper when there's suddenly OLIVIA COLMAN.