Free Speech Get a Sneak Peek Inside the New Book Signature In the CellRobert CrowtherJune 25, 2009, 8:07 AM Email Print Google+ Linkedin Twitter Facebook If you hvaen’t got your copy of Signature in the Cell yet here’s a chance to try before you buy. You can get a good sneak peek inside SITC over at the Harper Collins website. Click here to Browse Inside.