Netflix’s Danish crime drama seriesSecrets We Keepuses a great cast to unfold a gripping mystery. Themystery seriesfollows one woman’s search for the truth after the disappearance of her neighbor’s au pair.Secrets We Keeptakes place in a wealthy Copenhagen neighborhood where Cecilie and Mike lead an idyllic life with their son and their friends, Katarina and Rasmus. However, things quickly take a dark turn when Katarina and Rasmus’s au pair, Ruby, disappears, and Cecilie finds that those closest to her are unwilling to help find Ruby.
As theimpressive crime drama showunfolds, it becomes clear that Cecilie has stumbled into something that changes everything she believed about her community, her friends, and even her own family.Secrets We Keepexplores the dark divide between the upper classes of Copenhagen society and the people that work for them through the cast’s great, but chilling, performances that make it one of thebest shows on Netflix.Secrets We Keep’s ending does leave some ambiguity regarding what Cecilie will do next, and the complex characters will leave audiences thinking about the series long after it ends.
Marie Bach Hansen As Cecilie
Date Of Birth: Jul 16, 2025
Actor:Marie Bach Hansen was born in Borum, Denmark in 1985, and she began her career in the filmKick’n Rushin 2003.Hansen is perhaps best known for starring in the seriesThe Legacyas Signe Larsenfrom 2014 to 2017. She is also known for appearing in the Danish filmsHvidsten GruppenandThe Last Vermeer. Hansen has appeared on the TV showsThe Team, Hvide Sande, andDansegarderoben.
Dansegarderoben
Sussie
Character:Marie Bach Hansen plays the main character Cecilie inSecrets We Keep. Cecilie is married to Mike and is the mother of Viggo. When Ruby goes missing and her own au pair expresses concern, Cecilie begins to investigate the disappearance and learns some shocking, dark information about her seemingly idyllic community.
Simon Sears As Mike
Date Of Birth: June 28, 2025
Actor:Simon Sears was born in Roskilde, Denmark in 1984 and made his first appearance onscreen in the 2009 short filmNorthern Lights. Sears has starred in numerous films and TV shows throughout his career, includingWinter Brothers, Enforcement, Follow the Money, Ride Upon the Storm, Baby Fever, andThose Who Kill. He is likely best known to English-speaking audiences forhis role as Ivan in the Netflix seriesShadow and Bone.
April 9th
Shadow and Bone
Those Who Kill
Frederik Havgaard
Character:Simon Sears appears inSecrets We Keepas Cecilie’s husband, Mike. The wealthy couple lives in an upper-class area of Copenhagen, and while Cecilie is ready to help Angel search for Ruby, Mike is unhappy that his wife is questioning the status quo rather than siding with other people in their community by default. The pair is also friends with Katarina and Rasmus, whose son is the same age as theirs.
Danica Curcic As Katarina
Date Of Birth: July 09, 2025
Actor:Danica Curcic was born in Belgrade, Serbia in 1985 and grew up in Copenhagen. She began acting in 2011, appearing in an episode ofThose Who Killand in the filmMike Hunt. Since then, Curcic has appeared in numerous other films, such asAll Inclusive, Silent Heart, Out Stealing Horses, Murina, andThe Bombardment. She has also starred in the seriesThe Bridge, Nobel, Equinox, and The Chestnut Man, butCurcic is best known for playing Mia Lambert in the series adaptation ofThe Mist.
The Chestnut Man
Naia Thulin
Character:Danica Curcic plays Katarina inSecrets We Keep. Katarina and her husband Rasmus are neighbors and friends of Cecilie and Mike, and it is their au pair, Ruby, who disappears. After Ruby’s disappearance, Cecilie becomes suspicious of Katarina and her potential connection to the crime, as Katarina does not seem to want to look for Ruby.
Lars Ranthe As Rasmus
Date Of Birth: Jun 29, 2025
Actor:Lars Ranthe was born in Copenhagen in 1969, and he appeared as Birger in the TV seriesCrashas a child. Ranthe reentered acting as an adult with the filmThe Bench, followed by numerous other film and TV roles since. He has starred inMinor Mishaps, Aftermath, Brothers, A Funny Man, andThe Hunt.Ranthe is best known for appearing as Peter in the 2020 filmAnother Round. He has also appeared in the showsDicte, Badehotellet, Ride Upon the Storm, andThe Chestnut Man.
Another Round
Peter
Character:Lars Ranthe appears as Rasmus, Katarina’s husband, inSecrets We Keep. Rasmus and Katarina employ Ruby, who cares for their son, Oscar. After Ruby’s disappearance, Cecilie wonders whether Rasmus could have been involved in what happened to her.
Secrets We Keep Supporting Cast & Characters
Excel Busano As Angel: Excel Busano appears as Angel, Cecilie’s au pair who cares for her son Viggo, and does most of the household work. Angel is also Ruby’s friend, who is one of the only people willing to look for Ruby.Secrets We Keepis Busano’s first TV appearance.
Sara Fanta Traore As Aicha: Sara Fanta Traore plays the detective, Aicha, inSecrets We Keep. She helps Cecilie look into Ruby’s disappearance, though it becomes clear most people are not very invested in the investigation. Traore is best known for appearing inEmpireas Petrine and as Trine inThe Nurse.
Lukas Zuperka As Viggo: InSecrets We Keep, Lukas Zuperka plays Viggo, the son of Cecilie and Mike. He is also friends with Oscar, and the two boys become suspicious as the series progresses and more information about their behavior is revealed.Secrets We Keepis Zuperka’s first acting credit.
Frode Bilde Ronsholt As Oscar: Another newcomer inSecrets We Keep’s cast is Frode Bilde Ronsholt, who appears as Oscar. Oscar is the son of Katarina and Rasmus, and he is under the care of Ruby before she goes missing. Trying to protect her own son in the process, Cecilie becomes increasingly wary of Oscar and Viggo spending time together.
Donna Levkovski As Ruby: Dona Levkovski appears as Ruby throughoutSecrets We Keep. Ruby is the missing au pair that the series revolves around. Prior to her disappearance, she expresses concern for her safety to Cecilie, who is unsure of how to intervene. Ruby is also friends with Angel. The Netflix series is Levkovski’s first acting credit.
Cast
WHERE TO WATCH
Secrets We Keep, released in 2025, follows Cecilie as she investigates the disappearance of a neighbor’s au pair in a wealthy suburb. Her quest for answers exposes hidden truths, disrupting the veneer of her idyllic surroundings and unraveling her presumably perfect world.
