In the last episode of 'Cloak and Dagger', we saw Tyrone Johnson (Aubrey Johnson) and Tandy Bowen (Olivia Holt) discover the truth about Mayhem and detective Brigid O Reilly. In season 2 episode 3, Tandy and Tyrone discover how the energy from the Roxxon rig destruction has affected Brigid, who was pushed into the river by detective Connors. They meet Mina Hess, who is currently researching what really happened that fated night when Cloak and Dagger beat the fate of divine pairing and she has partially found the truth.
While trying to find the specific cause that effects humans and turns them into terrors, as seen in the finale of 'Cloak and Dagger' season 1, she has so far found the energy that causes anyone who comes in contact with it to split into two different individuals who have the same DNA, memories, and fingerprint. What changes after, is that one of them turns docile as the part of the brain that registers emotions like anger and vengeance do not react. While the other individual's brain solely reacts to these reactions which make them aggressive enough to attack the docile counterpart, harsh enough to kill. This is explained in parallel to what Mayhem has been up to in the last eight months.
At one point, Tandy starts to wonder if Mayhem is right, after all, in leaving a string of bodies in her wake. After all, they are men who are involved in kidnapping young girls and selling them into the sex trade. Tyrone puts this to rest when he points out that his brother was killed by a man who was quite similar to Mayhem. This is the only reason why she lets questions about using violence pass.
What is interesting about the episode is that Mayhem is not painted entirely as a villain. What drives her is revenge. She wants to kill Connors because she knows he killed officer Fuchs and stuffed him in the refrigerator. In an effort to get back at Connors, she begins by tracking his old partner and that's how she finds the thugs who deal in drugs and kidnap women. While she does save a few of them, she doesn't ensure their safety or check their well-being after experiencing something so traumatic. That's what hints at the brewing evil inside of Mayhem, and this also shows that she could be tapping into the Darkforce dimension, only unlike Tyrone, she probably hasn't figured it out.
Why did we come to this conclusion? It is because Tyrone manages to trap her in the Darkforce dimension amid what Mayhem fears the most - seeing officer Fuchs again. Not only does she meet him again, but she sees him stuffed in a refrigerator. To escape this, she would have to manipulate the dimension with her own powers. In the meanwhile, we can also look forward to Tandy and Tyrone fight to uncover the working of the human trafficking ring together.