This Week Abby is joined in the classroom by Fox News Investigative Unit Reporter and Producer, Cristina Corbin,  to help with her lesson plan on the case of the Long Island Serial Killer.

Cristina explains that this case has been ongoing for over a decade, and how she has been hands-on since the four bodies were discovered at Gilgo Beach in 2010. Cristina details the timeline of the case and why she believes police officers have yet to identify a suspect or a person of interest.

Keep up with Abby after class on Twitter: @AbbyHornacek