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.

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.

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.

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.

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.

Maria's investigation into her mother's disappearance leads her and Alex to the home of a mysterious boot maker named Travis. Isobel's night out leads her into the arms of someone unexpected. Liz is dealt a devastating blow.

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.

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.

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.

Max investigates the break-in meanwhile, Alex continues his research. Rosa and Isobel team up and Liz makes a shocking discovery.

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.

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.

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.

Liz Ortecho reluctantly returns to her tourist-trap hometown of Roswell, N.M., and reconnects with Max Evans, her teenage crush who is now a Roswell police officer. But Liz soon discovers a shocking truth: Max is an alien who has kept his unearthly abilities hidden his entire life, along with those of his otherworldly sister, Isobel, and their friend Michael. Elsewhere, Master Sgt. Jesse Manes spearheads a long-standing government conspiracy—unbeknownst to his son, Alex Manes.

With the threat of Jones behind them, in a peaceful Roswell we find Liz is busy teaching while Max lends an assist to his ex-partner on a string of recent bank robberies. Our couples are happy and thriving but a sudden storm, leaves everyone on edge about what is to come.

After being exposed to her own "alien-power mist," Liz finds herself trapped in a fever dream and a battle to save not just her own life but Max's life as well. Meanwhile, Michael stumbles on a secret Rosa is keeping involving a surprising former adversary.

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.

A visitor connected to Liz's past comes bearing gifts. Anatsa digs in on a story about the bank heists, angering Max and putting Kyle and Isobel in a difficult position.

The anniversary of Rosa’s death reignites tensions as the town takes aim at Liz and her father, Auturo, for what happened on that fateful day 10 years ago. Meanwhile, Max confronts Michael and Isobel, who are concerned that his feelings for Liz will expose their secret. Elsewhere, Master Sergeant Manes’ attempt to convince Kyle of the alien conspiracy in Roswell takes an unexpected turn. Finally, Liz and Kyle make a shocking revelation about Rosa’s death.

Liz, Max, Michael and Cameron put a plan into action that could finally get them a step closer to catching Bonnie and Clyde. Meanwhile, Maria is hiding her recent lack of visions and Kyle has a date.

Liz turns to Shivani for help finding scientific answers while Bonnie looks to Max for protection. Meanwhile, Kyle and Isobel deal with the fallout of their actions.

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.

As Liz begins to see the error of her ways, she is quickly faced with a new threat which forces her to make a difficult decision. Meanwhile, Max finds himself in an intense standoff and Michael begins to lose hope of ever reuniting with Alex.

Liz, doubting her abilities, calls for reinforcements, meanwhile Isobel shows Max a memory, one that will put him on a new trajectory and Michael makes a promise to Alex.

Liz is faced with an impossible decision, meanwhile Max agrees to join Isobel on a mission to save Bonnie.

Jones fills Michael and Isobel in on bits from the past as they look for a way to save Max’s life. Meanwhile, Maria goes to extremes to try and stop a murder, and in order to move forward in her research, Liz will have to face her past.

Liz and Max have a major disagreement prompting her to turn to Rosa for guidance and Maria struggles to connect to her mother's spirit.

With missing friends and mysteries abound, Liz returns to fringe science, but in working alongside her new mentor, she's confronted with an unsettling revelation and a difficult choice, meanwhile, Maria uncovers the truth behind the "messages" she's been receiving.

After uncovering some unsettling information about Max, Liz runs a series of tests to see what his powers may be capable of. Michael and Isobel take matters into their own hands after learning that Liz may be getting too close to Max. Liz enlists Maria’s help as she goes on a scavenger hunt across Roswell to uncover more about Rosa’s final days.