Over the next few days, viewers will see that Walker (Neil Newbon) is still determined to make Brendan Brady (Emmett Scanlan) pay for what happened to his late brother - and will stop at nothing to even the score.
In a frightening showdown with his arch-enemy, Walker makes it clear that he plans to target Brendan's loved ones - leaving the frail nightclub owner with a tough and terrifying task on his hands as he battles to secure their safety.
© Lime Pictures
© Lime Pictures
When Brendan sees lilies on his sister Cheryl's car bonnet, he immediately recognises them as Walker's calling card and fears that the vehicle could be about to explode.
A desperate Brendan screams at Cheryl (Bronagh Waugh) to get out of the car, but when no explosion comes, it's apparent that she's not the one Walker is targeting at all…
© Lime Pictures
© Lime Pictures
Soon afterwards, Brendan is horrified to find Walker pointing a gun at the love of his life - Ste Hay (Kieron Richardson).
Brendan is desperate to protect his ex-lover, but in the frantic struggle that follows between him and Walker, the gun goes off and one character will be shot…
© Lime Pictures
© Lime Pictures
© Lime Pictures
While the unlucky individual's identity is being kept firmly under wraps, we can confirm that even this shocking incident won't stop Walker in his tracks - as he soon includes Brendan's teenage son Declan (Jay Duffy) in his deadly plans.
The first Brendan hears of this is when he receives a phone call from Declan with only screams at the other end.
Walker's horrifying idea is to give Declan an overdose so Brendan gets a taste of his tragic ordeal with Cam, but viewers will have to wait and see whether Brendan can save his son in time.
With lots at stake in must-see episodes for Hollyoaks, one character won't make it through next week - but who is going to pay the ultimate price in the battle between Walker and Brendan?
Hollyoaks airs weeknights at 6.30pm on Channel 4, with first-look screenings at 7pm on E4.
