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

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.

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.

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

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.

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.

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 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.

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.

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

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.

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

A desperate Liz agrees to a deal. Meanwhile, Rosa helps Isobel make a big discovery and the fight to save Max begins.

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.

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.

Torn between the heartache of Max's sacrifice and the joy of Rosa's resurrection, Liz suppresses her grief to focus on moving out of Roswell with Rosa. Michael copes with Max's death in his own self-destructive way. Isobel hones her alien powers.

Driven by the prospects of her scientific research, Liz opens up to Diego about all the good her findings could do; Max enlists Kyle's help with the recent abductions; Michael does his own investigating into Alex's disappearance.

Liz and Max continue to search for a way to stop Jones. Michael is worried about Alex and elsewhere, Isobel finds a big piece of the puzzle.

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.

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.