4400 (pronounced "forty-four hundred") is an American science fiction mystery drama television series developed by Ariana Jackson.

Forty-four hundred people who vanished without a trace over the last century all make a sudden return, having not aged a single day and with no memory of what happened to them.

Jackson and Anna Fricke were attached to serve as executive producers on the series alongside Laura Terry.

[24] On October 14, 2021, Kausar Mohammed, Wilder Yari, and Theo Germaine joined the cast in recurring roles.

[28] Metacritic, which uses a weighted average, assigned a score of 65 out of 100 based on five critics, indicating "generally favorable reviews".