S4E1 - Touch-and-Go
While investigating a Calling, Michaela finds a mysterious stowaway. Ben clings tightly to his beliefs. Cal comes out of hiding to pursue a lead.
S4E2 - All-Call
Hidden voices on the black box draw Saanvi in. Cal sneaks to see an apprehended Henry. During a podcast appearance, Ben seeks help.
S4E3 - High Flight
Cal tries to understand his scar. A Calling leads Michaela to 828 co-pilot Amuta, who sheds light on what he saw. Ben makes an emotional connection.
S4E4 - Go-Around
A shared vision brings Michaela and Kyle together for a heartbreaking reason. Meanwhile, Eagan offers Ben valuable information — but at a price.
S4E5 - Squawk
Michaela, Vance, Jared and Zeke's search for Ben at the compound leads to an explosive confrontation — and a divine miracle.
S4E6 - Relative Bearing
Everyone is forced to adjust as Cal guards a secret, Eagan pursues his own mission, and Michaela uncovers a tragic murder.
S4E7 - Romeo
After finding another dead body, Michaela and Jared try to track down a serial killer. Cal goes on a date. Zeke faces old demons.
S4E8 - Full Upright and Locked Position
Caught in a tough position, Cal attempts to clear his name as the search for the killer continues. Saanvi tests a theory on a reluctant volunteer.
S4E9 - Rendezvous
An ominous Calling shakes up Michaela and Zeke’s party. Cal and Ben receive devastating news. Michaela, Saanvi and Eagan look for the Omega Sapphire.
S4E10 - Inversion Illusion
As the Stones race to find the Omega Sapphire, Ben finds hope in a Calling that reunites him with a familiar face. Zeke faces a difficult choice.
S4E11 - Final Descent
As the passengers adjust to a frustrating new reality, Ben and Michaela seize an opportunity to solve a Calling, with the Registry in hot pursuit.
S4E12 - Bug Out
Michaela finds a welcome distraction in helping Jared with an investigation. Cal tests a new ability. Ben and Saanvi try to decode a mysterious message.
S4E13 - Ghost Plane
Michaela heads to a dock with Jared to look into Ben's Calling. Saanvi walks Cal through a daunting task. A dark presence infiltrates the Stone family.
S4E14 - Fata Morgana
As terrifying plagues descend on the detention center, Saanvi scrambles for a solution and Michaela steps up in a crisis. Cal attempts to reach Angelina.
S4E15 - Throttle
Desperate to stop Angelina, Ben makes a risky move that yields unexpected consequences. A family emergency sends Michaela in a different direction.
S4E16 - Furball
Michaela and Jared make the most of their arrangement. Angelina receives support from Eagan. Panic grips the detainees amid devastation at the facility.
S4E17 - Threshold
As the Death Date nears, Callings begin to take a toll on Cal. The group sends out a cry for help. A familiar face provides hope in an unexpected place.
S4E18 - Lift/Drag
The passengers race to solve their Callings as Saanvi tests a theory on the patients. Eagan makes a surprising move. Michaela confronts hard truths.
S4E19 - Formation
All signs point to the end of the Earth, spurring the Stone family and the passengers to work together and decipher cryptic clues before time runs out.
S4E20 - Final Boarding
The Death Date has arrived. As tensions erupt and revelations emerge, the passengers of Flight 828 reunite and face the unknown together.
