Humans - Season 2 - Episode 4
Mia and Ed get closer but their relationship is thrown into jeopardy when their secret is discovered. Toby gets closer to Renie but offends her when he breaks through her synthie mask. Things look bleak for Niska until Laura brings in a surprise witness. When Milo confronts Athena about her secret agenda, she persuades him her research could be mutually beneficial. Karen and Pete delve deeper into the mysterious 'seraphim' investigation. As Hester's influence over Leo becomes clear, cracks appear between him and Max.
About Humans

Title: Humans
First Air Date: 2015-06-14
Last Air Date: 2018-07-05
Status: Canceled
Rating: 7.5/10 (from 614 votes)
Language: EN
Seasons: 4
Total Episodes: 24
Network: Channel 4
Genres: Sci-Fi & Fantasy, Drama, Mystery
Production Companies: Channel 4 Television, Kudos, AMC Studios
Synopsis
In a parallel present where the latest must-have gadget for any busy family is a 'Synth' - a highly-developed robotic servant that's so similar to a real human it's transforming the way we live.
Cast

Katherine Parkinson
Laura Hawkins

Gemma Chan
Anita / Mia

Emily Berrington
Niska

Lucy Carless
Mattie Hawkins

Colin Morgan
Leo Elster

Theo Stevenson
Toby Hawkins

Pixie Davies
Sophie Hawkins

Tom Goodman-Hill
Joe Hawkins

Ivanno Jeremiah
Max

Ruth Bradley
DI Karen Voss