Set one year after the events of Hell House LLC II, the hotel is on the verge of being torn down when it is purchased by billionaire Russell Wynn as the new home for his popular interactive show, Insomnia. He invites journalist Venessa Sheppard and her crew to record everything happening inside the hotel leading up to the performance - but they soon encounter a more nefarious plot, one that threatens to unleash a veritable hell on earth.
| Actor | Role |
|---|---|
| GGabriel ChytryRussell Wynn | Russell Wynn |
| EElizabeth VermilyeaVanessa Shepherd | Vanessa Shepherd |
| SSam KazziJeff Stone | Jeff Stone |
 Ryan Jennifer JonesSara Havel | Sara Havel |
 Theodore BouloukosRobert Lyons | Robert Lyons |
| BBrian David TracyAndrew Tully | Andrew Tully |
| BBridgid AbramsJane Maloney | Jane Maloney |
| JJoy ShatzMolly Reynolds | Molly Reynolds |
| LLeo DeFriendGregory Sandvick | Gregory Sandvick |
| JJordan KaplanMax | Max |
| DDanny BelliniAlex Taylor | Alex Taylor |
 Gore AbramsPaul O'Keefe | Paul O'Keefe |
| JJared HackerTony | Tony |
| JJoe BandelliLouie | Louie |
| SScott RicheyHarvey | Harvey |
 Olivia RoldanIsabel | Isabel |
| AAdam SchneiderMac | Mac |
| JJillian GeurtsJessica Fox | Jessica Fox |
| DDan DobranskyFather Paulis | Father Paulis |
| JJoe WalzNews Reporter | News Reporter |
| DDuane CooperSam Frost | Sam Frost |