Fringe

The series follows Olivia Dunham (Anna Torv), Peter Bishop (Joshua Jackson), and Walter Bishop (John Noble), members of a Federal Bureau of Investigation "Fringe Division" team based in Boston, Massachusetts under the supervision of Homeland Security. The team uses "fringe" science and FBI investigative techniques to investigate a series of unexplained, often ghastly occurrences, which are related to mysteries surrounding a parallel universe.
Source: 
TV