When I was interested in Fritz Perls Gestalt Therapy I used to find his method of analysis useful.
He felt that everything in the dream is YOU. You are the prisoner and the captor.
You might want to create a dialog between the prisoner and the captor.
Captor: "I'm not going to let you go"
Prisoner: "Please... Let.. Me... Go"
This is a classical Top Dog-Underdog scenario.
You need to identify with the power side and figure out what or who you refuse to let go.
Who or what are you clinging to.
Eventually you will realize that you have the power to abandon your captor and take its power back into yourself.
You need to identify your imaginary security tied up with your captor. There is something in your life that you want to free yourself from and at the same time you are afraid of losing your security.
All dreams come down to varieties of this dilemma. You need your enemies for something.