NBC's Timeless wrap-up movie will air on Dec. 20

TVLine

In a statement, producers said they are “promising fans an epic, unforgettable thrill ride through the past, present and future, with a healthy dose of Christmas spirit. Spread across three centuries and two continents, the finale will test Lucy, Wyatt and the entire Time Team like never before as they try to #SaveRufus, preserve history and put a stop to Rittenhouse once and for all.”