The Best Episodes Written By Toby Whithouse

The team is reeling from a KGB bombing and the mole’s confession, but with Operation Glass hurtling towards a shocking climax, MI5 is running out of time to piece the puzzle together and avert disaster. Bobby and Wendy make a crucial discovery which could have implications at the highest levels of government.

If Mitchell recovers from being staked through the chest, he'll have to confront Herrick.

The team is reeling from the shocking discovery of a mole among them, and as the Soviet plot continues unabated, it is up to Wendy to give the team the break they need. Meanwhile, when Sarah finds herself in danger, Alan is forced to make a decision that can make or break their relationship. Joe has trouble of his own when leaked information threatens the investigation and the lives of the team.

George is shocked to discover that his father has died, then meets the ghost of George Sr.

With the full moon looming and a house full of werewolves, pressure mounts on Mitchell.

Hal is ready to return to his vampire ways and Tom is set on killing him as an act of revenge, but the trio have to battle the devil and Captain Hatch.

There are strange goings-on at a comprehensive school - UFOs, over-intelligent children, and odd-tasting school dinners. This attracts the attention of the Tenth Doctor, Rose and Mickey Smith, as well as a couple of old friends…

Confronted with a 'type four', the housemates are forced to stare death in the face.

Nina's fate hangs in the balance, whilst Annie battles with Lia for her soul.

The trio arrive at a hotel where the layout of the rooms keeps changing. It also contains rooms that hold the greatest fears of each visitor.

George meets another werewolf called Tully, who overstays his welcome.

While Mitchell struggles with his growing lust for blood when asked out on a date, Annie has a harder time dealing with her emotions than she thought when she comes face to face with a someone from her past.

Sally finds out who has been haunting her; Josh tries to reunite with Nora.

George's relationship with Sam continues and Annie is left looking after a ghost baby.

Teenage vampire Adam and his schoolmistress lover cause havoc at Honolulu Heights.

Annie accidentally kills a cantankerous neighbour and Tom falls for geek werewolf Allison.

An alien warlord sets a twisted plan in motion in order to ensure his survival on a remote Army outpost, and the Doctor may have to do something unthinkable.

The Doctor and Clara save the frightened crew from a threat in an underwater base, but the Doctor questions the haunting.

George and Nina try to find out if their unborn baby will survive the transformation.

Annie investigates why she's trapped in limbo with the help of a miserable ghost.

As ghost Alex adjusts to life after death with werewolf Tom and vampire Hal, we meet poisonous pensioner Captain Hatch, behind whose foul exterior lurks an ancient evil.

The next agent on the Soviet list, Tom Mallory, is a brutal man currently in prison for assault. Without his freedom, he can’t perform his task and bring MI5 one step closer to thwarting Operation Glass – leaving Daddy with a terrible choice. Joe, haunted by events in his past, continues to struggle with his lover’s killer’s role in the plot. But when it’s revealed that a possible nuclear strike is imminent, Joe makes a deadly decision to stop the information from falling into enemy hands.

Tensions run high when Cutler takes Tom under his wing. Annie travels into purgatory.

Will our heroes be able to help teenage vampire Adam control his bloodlust?

If Mitchell is to rescue Annie from purgatory, he must first face up to his haunting past.