Max and Michael find themselves at an impasse over how to deal with the 4th alien. Liz has a dangerous encounter with an unexpected visitor. Kyle spirals after uncovering a dark secret about his father’s death. And Michael is forced to make a difficult decision about his future.

When a major revelation comes to light, Max, Michael and Isobel clash over how to deal with the fallout. Elsewhere, Alex uncovers a secret about Project Shepard and enlists Kyle and Michael’s help looking into it.

As the town prepares for the UFO Emporium Re-opening Gala, Liz and team find themselves on a collision course with an unlikely enemy.

The ultimate showdown with Jones is finally here and Liz must trust herself if she is going to the save the man she loves.

In a series of flashbacks to 2008, secrets are uncovered about Rosa’s final day, Isobel’s mysterious blackouts and Alex and Michael’s relationship in high school.

Frustrated by her inability to remember what happened the night Rosa died, Isobel turns to Liz for help regaining her memories. Elsewhere, Max and Cameron investigate a series of strange deaths in the town, while Sheriff Valenti reveals information to Kyle about his father.

Max and Michael travel to Texas to visit a faith healer, who may be able to shed some light on the alien symbol Max has been researching. Meanwhile, Maria and Liz pay a visit to the same faith healer in hopes of finding a cure for Maria’s ailing mother. Elsewhere, Alex and Kyle look into what Sargent Manes may be hiding.

Max and Michael begin to worry about Isobel after a series of mysterious blackouts cause her to spiral. Liz turns to Grant Green for help when she learns that he may have witnessed something strange on the night Rosa died. Meanwhile, Kyle and Alex uncover a secret that Kyle’s father had been keeping from everyone.

With Isobel’s life hanging in the balance, Liz and Michael frantically search for a way to help her. Max turns to his mom Ann about the origins of the alien symbol. Finally, Alex turns the tables on Sergeant Manes.

Determined to regain control of her life in the aftermath of Noah's death, Isobel makes a risky choice despite its potential consequences. Alex and Michael work together to unravel the mystery surrounding the night Nora's spaceship crashed in 1947.

On the verge of a breakthrough in her quest to save Max, Liz turns to Kyle for one last favor that could potentially land him in hot water. Michael and Alex's investigation into Nora leads them to a farm, where they meet a historian named Forrest.

After uncovering a surprising connection to their past, Michael and Isobel learn the painful truth about the night Tripp attacked their mothers. Meanwhile, Alex confronts his father about their troubled family history. Elsewhere, Kyle’s first date with Steph takes an awkward turn after Liz inadvertently becomes a third wheel.

As the town prepares for CrashCon, Liz and Max attempt to piece together who may be behind a potentially deadly plan targeting the festival; Maria and Isobel take drastic measure to learn more about the night Mimi disappeared.

Isobel and Maria take a trip together to look for answers. Kyle receives a message from his past. Michael makes a disturbing discovery.

Liz's plan does not go as expected, putting herself, Isobel and Michael in danger. Meanwhile, Eduardo confides in Alex.

Liz and Max race to find Heath in the hopes that he can help find a way to get Jones out of Max's body. Meanwhile, Michael and Isobel try to get through to Dallas.

Isobel helps Kyle save a life. Jones needs something from Michael. Liz and Heath continue to work on the science in the hopes of stopping Jones. Everyone is working together to try and defeat the dictator.

The discovery of some complications with Max's pod forces Liz, Michael and Isobel to confront the possibility that they may not be able to save him. Elsewhere, Maria and Alex make amends.

After uncovering a cryptic message from the past, Alex, Isobel, Max, Michael and Maria set out in search of answers at the reservation where Alex’s mother grew up. Meanwhile, Cameron encourages Liz to reach out to someone from her past after Auturo gets detained.

Liz confronts Max. Maria is desperate to figure out the mystery of her vision and Isobel is learning more about her abilities. Meanwhile, Kyle has a strange encounter and Michael is fueled by his anger.

Despite promising Liz that he’ll take things easy with his new heart, Max sets out to find Cameron after learning that she’s gone missing. Michael grows concerned about Maria after a surprising discovery about her family history leaves her vulnerable. Elsewhere, ready to move on, Alex goes on a date with Forrest, and Rosa makes a decision about her future.

Having realized that a deadly threat has infiltrated CrashCon, and with Max facing immediate danger, Liz and Isobel must make a heart-wrenching choice; Kyle faces a moral dilemma when the enemy requires medical attention.

Liz needs Rosa's help. Maria learns what Jones wants from her. Michael and Alex team up to help save Max.

Liz's work to find out more about a found skin sample hits a roadblock. Meanwhile, Michael continues to gain Bonnie's trust, but Clyde may not be as easily persuaded. Also, Isobel finally finds the courage to be honest with Anatsa and Maria suffers a devastating loss.

Max's secrets may have a devastating outcome for Liz meanwhile, Maria helps Dallas in his search for answers and Michael makes an unsettling discovery about himself.