Stratagem 28: Remove the Ladder After Your Ascent or Lure the Enemy onto the Roof, then Take Away the Ladder or Cross the River and Destroy the Bridge
Identification
Leading someone into a trap and then cutting off their escape leaves them at your mercy.
Example
When a mild-mannered minor celebrity talks their partner into signing a NDA and then turns the tables once the ink is dry.
Solution
Do not get into a situation before you know A) if there is an exit and B) where the exit is.