The Best Episodes Written By Lauren Lefranc

After their first real fight, Chuck avoids confronting Sarah by going on a rogue mission that leads him to his mom's MI-6 handler, Gregory Tuttle, and a mysterious Russian agent. Meanwhile, Ellie is on her own mission to uncover the Bartowski family's long-buried past.

While in Europe, Sarah and Chuck realize they’re traveling on a train with Spanish spies. Even though they’re all alone, they decide to take on these rogue agents. Of course, this impromptu mission doesn’t go smoothly. Meanwhile, Beckman orders her newest “unlikely” spy team – John Casey and Morgan Grimes – to track down the missing couple.

Truths are laid bare as Oz Cobb nears the end of his journey and his power struggle with Sofia comes to a head.

Casey carries out a side mission for his old commanding officer James Keller that leads to him committing treason. When Chuck learns the dark truth about Col. Keller, he and Sarah set out to break Casey out of jail and clear his name. Meanwhile, Awesome's plan to keep Ellie out of danger gets more difficult when she gets her dream fellowship.

After his last dream, Chuck asks Morgan to help him on a side mission. Their investigation becomes complicated when Stephen J. Bartowski returns and learns that Chuck downloaded the Intersect 2.0. Luckily, Chuck's father may be able to help his son.

The mission to take down Volkoff reaches a dangerous new level, while big changes loom at home. As Sarah works to free Chuck’s mom, Chuck and Morgan embark on their own mission to take down Alexei Volkoff. Meanwhile, Casey bonds with his daughter, Alex, while Ellie tries to ease Awesome’s anxieties over fatherhood.

When Chuck and Sarah get conned out of their wedding money, there is only one man they can turn to for help -- Sarah's conman father, Jack Burton. Meanwhile, Morgan pressures Casey to face Alex's mother.

After a harrowing mission, Sarah returns to Chuck with a huge secret. Meanwhile, Ellie and Awesome are presented with a new opportunity that could change their lives.

Sarah is forced to confront a secret from her past and feels she must do so alone, while Chuck urges her to let him help. When Sarah encounters her original handler, Kieran Ryker, she fears that he will harm those closest to her, including her mom.

In the wake of Carmine Falcone's death, Oz attempts to legitimize himself among Gotham's criminal underworld.

Hot on the trail of The Clairvoyant, Coulson and his team board a mystery train that seems to be headed for certain death.

After a visit with a neurologist, Henry hopes her new meds will fix everything. Meanwhile, Bill Boone attempts to identify his son Clay’s attacker.

Still reeling from her violent encounter with Bill Boone, Henry tries to let off some steam at a party.

Valentine's Day is interrupted when Chuck and the team are sent on a mission to England to protect a reclusive young heiress, Vivian McArthur. Meanwhile, Casey gets an offer from the mysterious Jane Bentley. Back at home, Ellie and Awesome find an unlikely solution to a parenting problem, as Morgan ponders a big move.

As the team takes on a missing persons case, Chuck and company struggle to establish themselves as Carmichael Industries in the face of a rival security firm led by the tough and efficient Gertrude Verbanski. Meanwhile, Morgan continues to adjust to the Intersect while Chuck adjusts to being his handler. Also, the Buy More finds an unlikely spokesperson to help drum up business.

War comes to Coulson's doorstep in a way he never anticipated as shocking revelations are brought to light, and Skye struggles to control her new abilities but will soon make a decision that irrevocably changes her life.

As Daisy and the team fight to protect Inhumans, S.H.I.E.L.D. discovers the shocking truth about one of their foes; Fitz helps Simmons recover information that could lead them back through the portal.

The world turns against S.H.I.E.L.D. when HYDRA impersonates them to attack The United Nations, and an unexpected enemy leads the charge to bring about their downfall.

After a heart-to-heart with Cleo, Henry faces a life-altering decision: leave Reston for a fresh start, or stay with the Hope family and confront her enemies.

Skye is torn between her loyalty to S.H.I.E.L.D. and her connection to the Inhumans as tensions rise between the groups -- and Coulson reveals a secret he's been hiding from even those closest to him.

The S.H.I.E.L.D. team is left reeling and decimated as Hive continues to sway Inhumans to his side. But there is a sliver of hope as Agents Fitz and Simmons follow a lead that may be able to stop the maniacal Inhuman once and for all.

When Chuck go undercover in Milan, Chuck realizes the "Achilles' Heel" in their relationship, but must set personal issues aside for the mission. Meanwhile, Morgan recognizes a fatal flaw that compromises the new Buy More. Elsewhere, Casey struggles to put down roots in Burbank.

Dangerous secrets are being kept from Coulson's Team, and he works the system to save Ward and Fitz when they are sent on a Level 8 classified mission that may end in tragedy.

As Henry sets out to find her mother, Cleo navigates an unwanted showdown between Bill Boone and his business associates.

As a full moon approaches, Letha's parents discover her relationship with Peter. Despite a crisis of faith, Chasseur prepares to capture the killer.