Dr. Tickle: A Ticklish Adventure

Samantha was tasked with going undercover to nail Catherine Zotterman, an evil criminal mastermind. Zotterman had a tickling fetish so Samantha first had to undergo treatment at the lab to release her tickle response."I'm not ticklish, " she told the doctor in charge of the lab, something she repeated half an hour into the doctor's repeated poking and probing of her body."Then why, " asked the doctor, "are your legs spasming? Why are they alternating between being tight steel bands and jiggling Jello?"Samantha looked down at her legs and her eyes widened at what she saw.
Seeing it made the rest of her body convulse as well and she gasped. The doctor's fingers kept attacking her ribs and Samantha felt her windpipe lock shut. Only when stars flashed in front of her eyes did the fingers pause their assault."So maybe you are ticklish after all?" asked the doctor."I don't know, " said Samantha, grateful that she had stopped, that the doctor had let her breathe. But what Samantha really wanted to know was why did being tickled turn her on?!