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Two teenage boys secretly meet up in a cabin, bear witness to a shooting and barely escape with their lives. Desperate to keep their relationship a secret and in fear of being found by the perpetrator, they remain silent but soon learn that what has been seen cannot be unseen -- and when you witness a horrible event, it changes everything.
Teenagers Philip and Lukas meet to share a kiss—and witness a murder, which they don't report out of fear being outed. Complicating matters is the fact that Philip's foster mom is the sheriff, who's soon investigating the case.
Philip and Lukas find proof that the killer's alive. Helen tries not to let the case affect her marriage. A new head of the FBI task force is introduced.
Helen seeks help from Agent Kamilah Davis in tracking a potential witness. The boys skip school and head to a club in New York City that's not what Lukas expected.
Ryan tries to shut down Helen's case. Helen and Gabe's marriage is tested when Philip reveals a deep secret. Lukas creates a scandal to bury gay rumors at school.
Ryan interferes with an autopsy to stop Helen from getting closer to the truth. Philip deals with a surprise visit from his mom. Lukas struggles with anxiety about the murders.
Helen is pulled away from her search for the murder weapon by Kamilah, who needs her help in finding a missing Sita. Lukas nears his dream sponsorship, but securing it may require an act of betrayal.
Lukas and Philip finally embrace their romance. Helen seeks Kamilah's help in protecting Lukas after she discovers evidence that the cabin shooter is alive and dangerous.
Ryan romances Kamilah to get close to Lukas. As she tracks the killer, Helen develops an unexpected emotional connection with Ryan. Meanwhile, Gabe uncovers a clue to his wife's mysterious past.
Ryan struggles to cover his tracks. Meanwhile, Helen's dark past comes back and threatens her marriage as well as her ability to protect her family.
Helen learns the identity of the killer; and races to find Philip and Lukas, who are missing.
