The Midtown Manhattan building that was the scene of a deadly shooting last week reopened Monday, but under very different circumstances. The building at 345 Park Ave. was once filled with the everyday buzz of office life,

The lobby of 345 Park Avenue will reopen for the first time since last Monday's mass shooting that left four innocent victims dead.

Kelley Mack, an American TV actress who appeared in AMC’s “The Walking Dead,” “9-1-1” and “Chicago Med,” died on Aug. 2. She was 33. Her family reported in a statement that Mack died in her hometown of Cincinnati after a battle with glioma of the central nervous system. Mack graduated from Hinsdale Central High School …