This is the moment the penny finally drops for Coronation Street favourite Tyrone Dobbs as he lashes out at his best friend for having an affair with his wife.
Realisation dawns on the grief-stricken mechanic, played by Alan Halsall, as he prepares to bury Molly, who died in last week's tram crash disaster.
Although Tyrone knows he is not the father of baby Jack, until tonight's episode he has no idea a dying Molly confessed to Sally Webster (Sally Dynevor) that her husband Kevin (Michael Le Vell) is the baby's real father.
As the funeral begins, Sally struggles to cope with the secret and flees the church.
When Tyrone spots Kevin and Sally arguing in the cemetery, the truth finally hits him. A furious Tyrone then launches himself at his business partner as the mourners watch in horror.
The drama unfolds tonight at 7.30pm and 8.30pm.
Meanwhile, Coronation Street is to be completely rebuilt as ITV announced plans today to create a huge new production complex.
The broadcaster will move its central Manchester base to a new home -- cobbles and all -- at MediaCityUK in Salford Quays in 2012.
ITV said it would build a "bespoke production and studio centre" for the Street, which celebrated its 50th anniversary last week with a ratings-winning tram disaster.