Mai Linh (Maggie Q) is a hacker and personal henchwoman also the lover of Thomas Gabriel. Their plot is to hold the US hostage and strip them of their technology through the use of a fire sale. She manages the executions of several hackers whom unwittingly gave away useful information to the terrorists. She succeeds in shutting down the power of the entire East Coast of the US, but John McClane kills her after a long fight by sending her down in elevator shaft.
- Maggie Q later appeared in 2018's The Con is On as villainess Irina.