Adjective

Definition: possessing a quality that arouses or stimulates desire or interest; also :  mockingly or teasingly out of reach.

Source: http://www.merriam-webster.com/dictionary/tantalizing

I came across this word while reading “The tunnel Rats of Atlantic Ave.” Page 2, paragraph #8

I now understand that the person the author is speaking about was drawn to the subject he was researching.