How does Mark know if Stacey's the one? Simple: she's worth killing for.
Mark Craven barely knows Stacey but he's been obsessed with her for years. When his friend Basil urgently needs to find a friend of Stacey's after a disastrous one night stand, Mark has the opportunity he craves: a reason to speak with Stacey.
Things go better than expected and Mark goes from being Stacey's distant admirer, and sometime stalker, to the dreamed of status of actual boyfriend. But then some competition shows up, disrupting his happiness. And Mark has a way of dealing with rivals.
He shows them his other face