Dexter, Season 8, Episode 6
 
A: This is not a science project.
B: No, it’s a matter of life and death. Jack’s life is on the line*.
 
From Dexter, Season 8, Episode 6
 
*On the line: You can use this expression when someone or something is at risk or cannot expect how things will happen next. For example, you can say “My professor caught me cheating on a test. I am on the line”.
 
By Cho Se-hyun, Tribune Reporter
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