The one we have always wanted to do but not yet got around to doing it is the kidnapp victim .
You can set this in any period you want which is a big attraction. some examples
Pirate kidnapping some royalty from a ship they have just ransacked
Cowboy kidnapping Indian Squaw
Indian kindnapping Cowgirl
It is easily done on modern day setting as well . Kindnapp a rich millionaires housewife for ransom . If the ransom isn't met you can get your evil way with her.
This scenario will invove in tying up it can either be just hands or fully tied to the bed spreadeagled. The choice will be yours and your partner.
I am assuming here of course that your will be the top ( dominant) and your wife the bottom( submissive) .The type of dress will be important to think about . The last thing you want to be doing is having to untie her to get her undressed. For example if I was doloing the modern setting I would want my Mrs to wear a buttoned up blouse either braless or a front fastening bra.
The skirt or trousers and the pants can easily be tugged off when she is tied up.
Another option we are considering is for her to wear old clothes. These can be then ripped or cut off .
As regards dialogue ,we tend to improvise . This comes easier with a little practise but saying stupid things is all part of the fun. Outakes may be numerous :) However there is no reason for not to use a written dialogue if that is your preference .
The list of roleplays is endless and in our case my Mrs just loves visiting fancy dress shops for new costumes.
There is an inexpensive book I can recommend and its called "Fantasy Sex" by Lisa Sweet. Plenty of ideas in this book and includes guides for the costume etc.
The only thing I will probasbly need to add is to make sure you have in your head with being the top is your set objectives and make sure the bottom (sub) will enjoy them .
Good Luck and please kindly let us all know how you get on