Mike Rodelli was born in Woodside, Queens, New York. In the 1960s he spent a good part of his youth playing sports in schoolyards. When Mike was a teenager, he saw a TV show about Jack the Ripper, which prompted a lifelong interest in puzzling over unsolved mysteries. Little did he know that, some thirty years later, his interest in serial killers would reshape his life and send him on a quest to bring the Zodiac Killer to justice.

Mike holds a BA in biology from Montclair State University and a master's degree in biological oceanography from the University of Rhode Island. When a controversial DNA sample in the Zodiac case appeared to rule out his suspect in 2002, his background in natural science proved to be critical in assessing and eventually overcoming that decision. His interest in thoroughbred horse racing likewise would serve him well in both understanding and gathering evidence on his suspect, an entrepreneur and a wealthy horse owner.
Since 2000, Mike's research on the Zodiac has been covered in several articles in the San Francisco Chronicle. In 2002 he appeared on the ABC News program Primetime Thursday. In May 2018 his book, The Hunt for Zodiac: The Inconceivable Double Life of a Notorious Serial Killer, was the subject of an article in the Los Angeles Review of Books by Tom Zoellner, "The Serial Killer as a Marketing Genius." In addition, Mike was a contributor with screen credit on the acclaimed 2007 feature film, Zodiac, by David Fincher/Warner Brothers, which starred Robert Downey, Jr. and Jake Gyllenhaal.

Mike currently lives in Atlantic City, NJ. When not chasing serial killers, he is an avid New York Mets and Rangers fan. He enjoys tackling the Sunday New York Times crossword and occasionally declares victory over it. Mike also reads voraciously and eclectically and is working on two new true-crime books.