A hacker takes over a Dallas hospital and threatens to kill all the patients in the upcoming episode of the CBS series "CSI: Cyber."

In "Hack E.R.," TV Guide reports that Avery (Patricia Arquette) and the gang will take on a dangerous criminal intent in terrorizing even the sick patients of a busy hospital. The hacker will reportedly hold every patient hostage by controlling all the networked medical devices. He will mandate that all his demands be met or he will kill one every hour.

The Cyber team will have to figure out how the impermeable security system of the hospital is breached by the culprit. If they fail to locate the source on time, a major tragedy will transpire. Will they be able to keep their cool in the face of the threat?

Last episode, a cellphone app called the Red Crone was used by a non-contact pedophile to lure children. Two kids from Richmond, Virginia suddenly went missing and local policemen suspected that it was because of an Internet meme. They approached the Cyber division for help to locate the children before it was too late.

After investigating the broken phone of one of the victims, the team managed to trace it to a graveyard. The pedophile created a quest for the children where they had to follow clues to reach the Red Crone's mansion. When the team tracked him, he had the boys in special nightgowns, but still unharmed.

Agent Mundo (James Van Der Beek) was so disgusted with the pedophile that he almost beat him to death. Avery was not pleased with his actions, even though he had reason to be as he is a father himself. She had to suspend her colleague from doing fieldwork until he could rein in his emotions.

"CSI: Cyber" season 2 airs Sundays at 10 p.m. EST on CBS.