How is your ethics, if you know, or know of a person who has the cure to autism but will not release it unless paid big, would you release it had you the opportunity?

Say a person you know, a friend, loose acquaintance, etc. says he/she has the cure to autism, shows you the data they have on a thumb drive, but say they are going to leak they have it but will not let anyone have it save the highest bidder. If said person upon departing you forgot the thumb drive, and it was an unencrypted drive so you could access it, would you copy the data and release it before returning the drive, give it back without looking at it, anonymously mail it to some researchers of autism never letting the person who lost it know what happened to it?