The war between the Kardashians and Blac Chyna just hit a new high. The famous family has reportedly gone to extreme lengths to ensure they stay one step ahead of the model in their legal battle.

According to Radar Online, the family has "spent a fortune" hiring high-profile private detectives to spy on Chyna as the matriarch, Kris Jenner, weighs out all of their options.

This hefty plan comes on the heels of the former exotic dancer filing court papers against the entire family in wake of her messy breakup with Rob. The site reports that all of the Kardashian sisters are involved in the master strategy.

"They want vengeance not because Chyna hurt Rob but because she insulted the family and dragged their name through the mud," a source told the site. "Kris is organizing the thing with Khloé and Kourtney's help and Kim's support."

The executive decision to hire private detectives to "tail Chyna's evey move" was all Kris' idea though, the insider added.

"They've got the inside track of what Chyna's doing 24/7 and won't rest until they see Chyna go down in flames," the source continued.

Get more Chyna and Rob news with BET Breaks, above.