A killer is still on the run a week after shooting a dentist and his wife with their kids nearby. This video could give clues

By Holly Yan, CNN (CNN) — Whoever gunned down a young dentist and his wife is still on the loose a week after the grisly killings. But police hope newly released video of a “person of interest” and help from the public will help solve the crime shrouded in mystery. Spencer Tepe, 37, and Monique