After discovering David's suicide message on his laptop, Gail realises what her the hairdresser is plotting and enlists her other children to help save him.
Desperate to foil his suicide mission, Sarah and Nick join the heartbroken mother attempt to hatch a plan that will stop David in his tracks.
The trio decide to lock David in the bistro cellar until Clayton's murder trial is over - but their plan isn't without its flaws.Â
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Unaware of just how determined David is, the widower is seemingly willing to do whatever it takes to free himself from the makeshift prison cell.
When all goes quiet behind the locked door, the family are shocked to discover the troubled father laying motionless and bleeding on the floor.
Could it mark the end of David's dangerous plan or will he rise to avenge his late wife once and for all.
Speaking exclusively to press including Express.co.uk last week, Jack P. Shepherd said that his upcoming storyline is his "biggest" to date.Â
David Platt has a dramatic week ahead on Coronation Street
"Every time it seems to go bigger and bigger. I've tried to kill myself before, but it seems the next one always tops the other one."
On his scenes built in the purpose-built basement, the 28-year-old added: "They were very emotional, the scenes with me, Helen [Ford] and Ben [Price].
"They didn't seem emotional when I first read them but then when you get in that environment and you can't see anyone, you just listen to them, it was nice."
Coronation Street's catastrophic week kicks off on Monday October 17 on ITV.