The siblings are at the centre of dramatic scenes after Nick (Ben Price) finally realises that David knows the truth about his one-night stand with Kylie.
Realising that they need to sort this out, Nick braces himself to talk to David (Jack P Shepherd) after they've set off in the Bistro van to run an errand together.
A nervous Nick earnestly apologises to David for what happened with Kylie, claiming that it didn't mean anything to either of them. Nick adds that the secret has caused far too much damage, so he now wants to head home and tell Leanne everything.
Nick's words leave David in a panic, as he fears that the truth will fatally damage his relationship with Kylie.
Making an impulsive but terrible decision, David unfastens Nick's seatbelt and grabs the wheel of the van. As a result, the vehicle careers out of control and into the path of an oncoming lorry…
After the crash, David stirs to life and seems to be okay, but he is horrified to find Nick's bloodied body trapped in the mangled van.
Feeling terrible about how far he's gone, David dials 999 and emergency services soon arrive on the scene to cut Nick free from the wreckage.
Once Nick is finally in the ambulance, it's unclear whether he'll survive, and the situation takes another turn for the worse when his heart stops. A guilty David then reaches breaking point - has he killed Nick?
Coronation Street airs these scenes on Monday, August 5 at 8.30pm and Wednesday, August 7 at 7.30pm on ITV.
> 'Coronation Street' planning car crash horror
> 'Coronation Street' stars film Platt crash horror - pictures
> 'Coronation Street' Jack P Shepherd: 'David plot will run and run'
> 'Coronation Street's Jane Danson: 'Leanne knows something isn't right'
> Read more 'Coronation Street' spoilers and news
Over on Hollyoaks, Doctor Browning reaches the end of his tether and decides to deal with his mother-in-law Myra McQueen once and for all.
Browning (Joseph Thompson) plans a shocking revenge when he is suspended from his job over Myra's tampered medical records.
Having seen Myra (Nicole Barber-Lane) paying a secret visit to the hospital, Browning knows that she is to blame for his suspension and resolves to take action.
As Myra prepares to close up the florist late in the evening, she is shocked to find herself suddenly confronted by a masked intruder who is clutching an iron bar.
Myra immediately begs for mercy, but it's no use as she is brutally attacked with the weapon…
Myra is rushed to hospital after the terrifying incident, leaving the McQueen family waiting anxiously for news.
Wanting to finish off the job, Browning approaches Myra's hospital bed and tries to suffocate her, but he's interrupted by Nana McQueen. With Myra in a bad way, will she pull through?
Hollyoaks airs these scenes on Tuesday, August 6 at 6.30pm on Channel 4.
> 'Hollyoaks': Dan Tetsell talks Jim McGinn's stalker secret
> 'Hollyoaks' Phoebe roped into Browning's scheme - spoiler pictures
> Read more 'Hollyoaks' spoilers and news
Coming up on Emmerdale, Laurel Thomas places herself in serious danger as she continues the search for her attacker Ross.
Laurel (Charlotte Bellamy) finally tracks down the carjacker when she starts visiting other garages that Cain Dingle has been dealing with.
Spotting the culprit at one of the garages, Laurel follows him home and makes her way inside, clutching a pair of scissors.
Startled by Laurel's visit, Ross apologises for what he did to her, but it's not enough for Laurel and she refuses to leave.
Unfortunately for Laurel, Ross soon becomes cocky as he sees that her façade is wavering. He tries to take control and Laurel is unnerved as he moves closer, backing her against the door.
When Ross knocks a lamp over, Laurel drops the scissors in shock. Now in complete control, he looks menacingly at his terrified victim.
At the same time, Marlon and Cain have figured out where Laurel is and are rushing to Ross's home. Can they rescue her in time?
Emmerdale airs these scenes on Thursday, August 8 at 8pm on ITV.
> 'Emmerdale': Charlotte Bellamy talks Laurel carjacking aftermath
> Read more 'Emmerdale' spoilers and news
Meanwhile, EastEnders airs the first scenes of glamorous newcomer Sadie Young early next month.
Sadie (Kate Magowan) is introduced as the new owner of Booty following Tanya Cross's decision to sell up.
Nervous about what the future holds for the salon, Poppy Meadow (Rachel Bright) is concerned when workmen descend on the business.
Wanting answers, Poppy heads over there and meets Sadie for herself.
Sadie later tells the Branning family that she's gutting the salon and will bring over Tanya's belongings.
Poppy is keen to know that her job is safe, but she is left disappointed when Sadie makes it clear that she will have to earn her job back…
EastEnders airs these scenes on Monday, August 5 at 8pm on BBC One.
> 'EastEnders': Kate Magowan to play newcomer Sadie Young
> Read more 'EastEnders' spoilers and news
Over on Doctors, The Mill's nursing staff face a tough time as Leona, a nurse practice development officer, arrives to review their work.
Mandy (Danielle Henry), Karen (Jan Pearson) and Chris (Nathan Wright) are concerned by the visit, fearing that their jobs could be at risk if the findings don't impress Howard.
When Leona turns up, she is immediately hard-nosed, uncaring and condescending as she sits in consultations determined to find problems.
As Leona starts lecturing the staff about needing to show more compassion, Chris snaps by telling her exactly what he thinks of her antics.
Later, Leona tells Howard (Ian Kelsey) that things at The Mill are much worse than she ever could have imagined, and she can only recommend a wholesale change of nursing staff. Will Howard back his staff or turn against them?
Doctors airs these scenes on Tuesday, August 6 at 1.45pm on BBC One.
> Read more 'Doctors' spoilers and news
Coronation Street was the winner of our storyline poll last week as 31.17% of you chose David's poison pen letter as the best plot.
Hollyoaks came second with 28.66% for Ste's shock over Pauline, while EastEnders was third with 26.56% for Whitney and Joey getting passionate.
Emmerdale took the remaining 13.61% for Cain and Charity's concern over Debbie.
Don't forget to vote in the poll below and let us know which storyline looks best this week!
Digital Spy Soap Scoop video - press play below to watch Amie Parker-Williams reveal gossip on a shock delivery for Leanne in Coronation Street, a desperate cover-up in Emmerdale, relationship twists in EastEnders and a cruel con in Hollyoaks.