Sleeper

A possible recurring storyline begins in this week's episode, 'Sleeper'. A woman named Beth slaughters two burglars, seemingly without recollection of the incident. Torchwood soon uncovers the truth - that she is a "sleeper agent", one of several aliens who have infiltrated Earth under the guise of humans, living their lives as normal until "activation" time. Only problem is, Beth has no idea she's not human. And guess what time it is?

You go girl!

Tosh is finally getting a bit of action. She falls for a very old man indeed, but heartbreak is in store when they are cruelly ripped apart. Meanwhile her flame for Owen is still burning brightly, and we'll see more evidence of that in the coming weeks. Mine's tuna mayo, love.

Torchwood -90

Who are Gerald and Harriet? We may discover a bit more about Torchwood's past in future episodes.

Doctor Jack

Is Captain Jack becoming more like the Doctor? Episode four, about an ever-growing alien that is being harvested for its meat, brings out CJ's empathetic side. "We see enough death," he tells his team then, echoing many a Tennant scene, touches the wounded beast and enquires: "What have they done to you, my poor friend?"

They Keep Waking Tommy

Episode three introduces us to Tommy, a soldier who was cryogenically frozen by Torchwood in 1918 and has to be defrosted every year for one day only. Hence every year is like a day for Tommy, who is still the same age 90 years on - and just as clueless over why this is happening to him. Clue: that pesky rift plays a big part.

Clueless no more

Rhys finally learns the truth about who Gwen works for in episode four, then is plunged straight into the action as he goes undercover on an operation. When the time comes for him to be fed an amnesia pill, Gwen throws down an ultimatum to Captain Jack.