The cases include the March 2007 shooting death of 19-year-old Jose Bogantes and the 2011 murder of 83-year-old Angel Delacruz. The Army veteran was found dead inside his Spring Lake home.
Authorities are also hoping to get new information on a local cab driver who disappeared on March 21, 2008.
William Simon has not been heard from, but his cab was found abandoned on Rosser Road in Spring Lake.
Officials will set up a command post in the Skyland Shopping Center from 1 p.m. to 3 p.m. in an effort to collect tips.