After an accident that takes the life of a worker on an oil platform, a security researcher begins to suspect that the situation is more sinister than it seems.
Bentos employees refuse to cooperate with Emma and Trevor, which raises suspicions about employee motivation; Trevor begins to doubt Emma's ability to lead the investigation.
A murder aboard the platform confirms suspicions that someone is behind the accidents; tensions between crew members increase.
The crew does its best to reestablish communications with the outside world; the number of victims increases.
The remaining crew members are separated into two groups, and suspicions abound about who is the killer.