It Happened at Lakewood Manor

It Happened at Lakewood Manor also known by the titles Ants and Panic at Lakewood Manor is a 1977 television film. The cast includes Lynda Day George, Suzanne Somers, Myrna Loy, Brian Dennehy and Bernie Casey.

Shortly after, the unscrupulous real estate magnate Anthony Fleming Gerald Gordon and his partner and mistress Gloria Suzanne Somers arrive at the hotel, there to haggle with the elderly proprietor, Ethel Adams Myrna Loy, and her daughter Valerie Lynda Day George as they pursue plans to convert Lakewood into a casino.In the meantime, foreman Mike Carr Robert Foxworth, who is in a relationship with Valerie, and his coworker and friend Vince Bernie Casey find the two missing men, but dead from poisoning. The ants begin to emerge, attacking a boy, then killing a hotel cook. They nearly kill Vince as he and Mike investigate the pit in which their men were buried. ........

Source: Wikipedia