With just a few days to go before the happy event, Mitzeee (Rachel Shenton) writes up all the details of Mercedes's affair with Carl (Paul Opacic) in her book - with the intention of Warren handing out copies at the ceremony.
As Warren (Jamie Lomas) threatens Carl to pay up if he wants his secret to remain under wraps, Doug tries to convince Seth to step in and stop the situation by telling Riley (Rob Norbury) the truth.
When the eve of the wedding arrives, how will Carl and Mercedes (Jennifer Metcalfe) cope with the pressure they're under? And will Warren get what he wants?
Hollyoaks airs weeknights at 6.30pm on Channel 4 and 7pm on E4.
> Hollyoaks' Rachel Shenton teases Mitzeee, Costello revenge plot
> Hollyoaks unveils dark Mercedes, Riley wedding trailer
> Read more Hollyoaks spoilers and news
Watch Hollyoaks' official teaser trailer for next week's episodes below: