While on a remote island, Tess was kidnapped by Marcos. Tess was almost killed, but Oliver Queen jumped in front of her and saved her life. Marcos tracked Tess down to Metropolis and attacked her and just as he was about to kill her, Clark arrived and saved her.
Tess was kidnapped and held hostage by Maxwell Lord, who tormented her with visions in order to forced her to reveal information about the Book of Rao. However, Tess was able to wake up and knocked Lord.
When Tess betrayed Clark Luthor by changing a tracker location, he grabbed her by the throat and shoved her through a window, dangling her over the edge. Just as he was about to drop her, Clark sped in and saved her.
Tess is stabbed by Lex. She dies in his arms after infecting him with a neurotoxin which takes away his memories of Smallville and Clark's secret.
Tess' life has been at risk 27 times since her introduction to the show in Season Eight until her death in the series finale.
Clark Kent has been willing to kill Tess on three different times in the course of the series. This makes her the only female character, and one of the few characters, which Clark has tried to kill due to anger.
Tess has died and came back three times, but only in Season Nine.