Dean, a 5-foot-10 guard, rebounded a miss by Ashton Pankey, and hit the game-winner as time expired for the heart-stopping victory for Jack Curran's basketball program.
A back and forth first half ended with Molloy leading, 34-33. Russell Smith, a junior guard, recorded 12 points in the first two quarters of play. Jeriel Henriguez led Long Island Lutheran with 10 points.
Henriguez scored 30 points on the night, including 14 in the third quarter, helping Lutheran to a 55-52 advantage heading into the fourth quarter.
Smith was equally effective in the second half for Molloy. He had 14 of his own game-high 35 points in the 4th quarter.