Sti Aisyah and Doan Thi HuongThe bizarre assassination of North Korean dictator Kim Jong Un’s estranged half-brother — a plot that appeared to be ripped straight out of a spy novel — will reveal a new chapter Friday, when the two women accused of pulling off the caper are expected to plead not guilty to the crime.

Siti Aisyah, of Indonesia, and Doan Thi Huong, of Vietnam, are alleged to have smeared a liquid across Kim Jong Nam’s face while he waited for a flight to Macau at the Kuala Lampur airport on Feb. 13.

The liquid was later identified as a banned VX nerve agent that authorities said killed Kim within “15-20 minutes.” Pyongyang is suspected of being behind the murder.

“VX only requires 10 milligrams to be absorbed into the system to be lethal, so I presume that the amount of dose that went in is more than that,” Malaysian Health Minister Subramaniam Sathasivam told reporters in February. “The doses were so high and it did it so fast and all over the body so it would have affected his heart, it would have affected his lungs, it would have affected everything.”