Frank sexually assaults fiancé Carla Connor (Alison King) next week after she dumps him on the eve of their wedding.
Although Frank runs off into the night after the attack, Lancel told Digital Spy that the businessman later returns and pretends that nothing has happened.
Lancel explained: "Within minutes, he's acting normally and saying things like, 'What's happened? I don't understand'. He's very, very clever - there's a twisted mind in there."
Discussing Frank's future, he continued: "All I can say is it's not the end. It's far from over - it's far, far from over for Frank. He's a very clever man, and he can twist and manipulate people very easily it seems.
"It'll be interesting for people to see what happens in the days after the attack - the way Frank twists and turns and manipulates. He'll lie and be deceitful, and there'll be blood on the street."
Sally Webster was recently tipped to become embroiled in the ongoing storyline, but these rumours remain unconfirmed by Coronation Street bosses.
Reports have also suggested that Frank and his mum Anne will start plotting against Carla in a bid to destroy her business.
> Read our full interview with Coronation Street star Andrew Lancel
> Read more from Coronation Street star Andrew Lancel in Soap Scoop
> Coronation Street's dark Carla and Frank storyline: Pictures
> Coronation Street Maria will support Carla after rape ordeal, says Samia Smith