This is a crock or a very neet story Idea. First I did not hear that you were blindfolded so you know where this "master lives" How about calling the police and filing asualt charges and kidnapping. As for the blackmail it is a little hard to send out tapes when your in jail. Blackmail kiddnaping threatend snuff are all grist for the mill for a good story but I highly dought that this happend in real life. Kind of sounds like a very bad epi of LA law from 1991.
Please post this in the fantasy threads not My BDSM life. Hellow Moderator!!!!

PS you being an attorny you know that a contract is null and void if under dures.