Absentia is a 2017 thriller series that was released on Amazon Prime Video in the US and AXN internationally. The series ran for three seasons (from 2017 to 2020) before it was cancelled. The third season was exclusively broadcast on Prime Video. Its recent Netflix US debut sparked a fresh wave of viewers, along with a burst of upbeat reactions.Set in Boston, Absentia follows FBI special agent Emily Byrne, who suddenly disappears while searching for a serial killer. After she does not return, she is presumed dead by the FBI and fellow agent and her husband Nick. Nick eventually remarries and introduces their young son, Flynn, to his stepmother.However, six years later, Emily suddenly appears again, with no memory of her abduction or the case she was investigating. Thus begins a harrowing mystery about Emily's life, as she grapples with her husband's second marriage and new family.Here is the complete Absentia cast.Absentia cast and character guide: Meet the main playersStana Katic as Special Agent Emily ByrneCanadian actress Stana Katic leads the cast as Emily Byrne. The series is centred around Emily's hunt for Boston's most notorious serial killer. Since the FBI Agent disappears while searching for the killer, she is presumed dead in her absence. However, six years later, she returns with no knowledge about her disappearance and is framed for a string of murders.Katic is most famous for playing the main role of Detective/Captain Kate Beckett in ABC's 2009 crime comedy series Castle. She has also appeared in big-screen titles like Justice Society: World War II and The Possession of Hannah Grace.Patrick Heusinger as Special Agent Nick DurandAmerican actor Patrick Heusinger is the next addition in the Absentia cast, who plays a fellow FBI agent and Emily's husband, Nick Durand. After frantically searching for his wife, he eventually marries another woman but Emily's return complicates things. The series follows him as he struggles with his resurfaced feelings for Emily and his duty towards his second wife.Patrick Heusinger is most famous for his character of James Schuller / Lord Marcus Beaton in CW's popular teen series Gossip Girl. He has also appeared in other small-screen titles like Girlfriends' Guide to Divorce and Royal Pains.Neil Jackson as Jack Byrne View this post on Instagram Instagram PostBlade: The Series (as Marcus van Sciver) fame English actor Neil Jackson plays Jack, Emily's older brother in the show. Jack is a surgeon who loses his medical license because of his alcohol addiction. Throughout the series, he struggles with addiction, his failing medical career and his sister's mysterious disappearance.Cara Theobold as Alice DurandDownton Abbey fame English actress Cara Theobold is another important addition in the Absentia case, who plays Alice, Nick's second wife. While Alice initially understands Nick's conflicting feelings after Emily's return, her behaviour changes as the story continues and she becomes convinced that Emily wants her husband and son back from her.Angel Bonanni as Detective Tommy GibbsFalse Flag fame Uruguayan-Israeli actor plays Det. Tommy Gibbs in Absentia. Tommy is the officer assigned to investigate Emily in a string of murders. While Gibbs tries to remain neutral, he becomes highly suspicious of Emily after she goes on the run.Absentia cast: Meet the supporting characters throughout the seasonsIn addition to the main cast, the thriller series also features many characters who appeared in one or more seasons. They are as follows:Bruno Bichir as Dr. Daniel Vega: Bichir appeared in the debut season as Dr. Daniel, an FBI psychologist who worked closely with Emily to uncover the secrets behind her disappearance.Paul Freeman as Warren Byrne: Warren is Emily's adoptive father and a retired police officerRalph Ineson as Special Agent Adam Radford: Adam Radford is another character from Season 1, who was Emily and Nick's bossChristopher Colquhoun as Special Agent Derek Crown: Colquhoun is another important addition to the Absentia cast, who played a fellow FBI agent Derek, throughout the three seasons of the showPatrick McAuley as Flynn Durand: Emily and Nick's sonMatthew Le Nevez as Special Agent Cal Isaac: Le Nevez's Cal appeared in the latter two seasons of the show. He is a former Navy SEAL who becomes Emily and Nick's colleague.Natasha Little as Special Agent Julianne Gunnarsen: Another member of the Boston Field Office who joins Absentia in the latter two seasons, Julianne is the best FBI profiler who is eventually promoted.Additional recurring cast for the show also includes Lydia Leonard, Ross O'Hennessy, Richard Brake, Josette Simon, Hugh Quarshie and Geoff Bell.You can stream all three seasons of Absentia on Prime Video.For the latest scoops on your favorite TV shows and movies, follow SoapCentral.