After Suzie's death, the knife was locked away in Jack Harkness's safe sealed with a "NOT FOR USE" tag. Torchwood Three, however, had to retrieve it to make the resurrection gauntlet effective on Suzie herself. Jack stabbed it into her chest, and she awoke from death immediately. The Torchwood team learned that use of the Life Knife in tandem with the gauntlet presented an extreme risk to whoever awoke a subject from death- siphoning of their own life force to fully resurrect. Toshiko Sato shot the glove into pieces, cancelling out its effect, and the Life Knife was once again returned to its proper place in the Hub's secure shelves. (TV: They Keep Killing Suzie)