Episode 1 | Episode XIII

In the lawless desert territory of Bir Tawil, a group of scientists carry out the next phase of Wilde's research: testing the bacteria on humans.

Episode 2 | Episode XIV

A team member is stung by a scorpion, leading to suspicions of sabotage at the base. Two years prior, Arthur faces challenges in gaining respect while incarcerated.

Episode 3 | Episode XV

Base's supplies are sabotaged. At Portlaoise, Arthur gets a letter from a secret admirer "XX". Distrust mounts over the tampering.

Episode 4 | Episode XVI

The participants suddenly get sick just as the computers are infected with ransomware. Arthur does Patrick's dirty work in exchange for a cellphone.

Episode 5 | Episode XVII

After a forceful seizure of power, the subjects attempt to escape the facility. At Portlaoise, Arthur receives an unexpected visitor.

Episode 6 | Episode XVIII

After Maggie helps Rachel successfully deliver her baby, the killer strikes again and XX's identity is revealed.