Doctor to become a married man?
Doctor Who moves in for a River snog as he appears to seal his marriage - after hundreds of years of being single.
Viewers will see him apparently become an honest Time Lord as the BBC1 series comes to a climax on Saturday night.
The Doctor (Matt Smith) and River Song (Alex Kingston) lock lips as they appear to tie the knot watched by Amy and Rory.
But as ever, fans will be left wondering to the end whether all is as it seems in an episode which sees time stand still.
The final episode of the sci-fi show draws to a close the story of the Doctor's date with destiny as he prepares to die on the shores of Lake Silencio.
The series began with Amy (Karen Gillan) and Rory (Arthur Darvill) being summoned to watch him die. And as viewers watched the episodes unfold, they discovered that River was really Amy's daughter Melody.
Saturday's episode sees a return for Winston Churchill (Ian McNeice) as well as the sinister suited villains The Silence and the manipulative Madame Kovarian, played by Frances Barber.
Bosses also pay tribute to late actor Nicholas Courtney as the death of his long serving character The Brigadier is acknowledged in the show.
The Doctor learns his old sidekick has died in a nursing home.
Courtney died in February at the age of 81 after making regular appearances in the programme for more than 20 years as Brigadier Alistair Lethbridge-Stewart.