United Kingdom, Oct. 2 -- Kim Kardashian was left "terrified" after someone "extremely close" allegedly "put a hit out" on her life.

The 44-year-old reality star - who has North, 12, Saint, nine, Chicago, seven, and six-year-old Psalm with ex-husband Kanye West - was stunned to receive a call from her personal private investigators, who believed her life was in danger.

In the trailer for season seven of The Kardashians, Kim said: "I got a call from investigators. Someone extremely close to me put a hit out on my life."

The trailer then cut to the wider family's reaction, with Kendall Jenner saying in a voiceover: "Everyone's kind of on edge."

And later in the trailer, Kylie Jenner claimed: "I heard footsteps walking into my room."

Th...