" Line in the Sand " is a prominent episode title and theme across several TV series. Based on common fan queries,

The group pursues the legendary Blue Crown, leading to a massive confrontation that leaves the future of certain core characters in question. A Line in the Sand (TV Movie 2004) - Plot - IMDb

: Titled "Blue Crown," the finale features a literal "line in the sand" moment for the Pogues as they face off in Morocco. Key Moments :

: SG-1 attempts to use an experimental Merlin technology to "phase" an entire village out of reality to hide them from an impending Ori invasion. Key Moments :

Hughes is forced into witness protection but eventually blows his cover to visit his sick son, leading to a showdown with an Iranian assassin known as "The Anvil".