Screenwriting : Logline Check by GJ Harvey

GJ Harvey That’s a strong setup, especially for jumping into pure action for the first time. The logline clearly establishes the stakes and the emotional hook with the father–son dynamic, which gives the action weight. One thing I’m curious about is whether the island and the assassin trainees function more as the core antagonistic force or more as the environment driving the conflict, since clarifying that could sharpen the threat. Overall, it reads like a contained, high-concept action premise with personal stakes built in.

"When a plane crashes on a remote island where trainee assassins..." I was hooked already, GJ Harvey!

You're really close to a solid logline. I suggest changing "must battle" to "battles." "Must” usually means the protagonist is forced to do whatever they need to do in the story instead of doing it willingly. You might need to use “must” in a logline though, like when the protagonist is forced by another character to do something. Using “must” to choose between two options is fine.

And I suggest giving the protagonist an adjective (the main flaw he has to overcome in the script or an adjective that describes his personality). It'll give us more insight into his character.

Love the idea. When a retired cop's plane,,,? Is the 'estranged' son the survivor of the crash or a survivor of the hunt? I assume the assassins are hunting each other and not being hunted by some other agency.

"… where assassins are trained …” and “… retired cop must battle to keep himself, and his estranged son , from being killed in the hunt.” The bit w the estranged son needs clarity and tightening . Your story is a new take on the short story, The Most Dangerous Game.

Or, how about a remote island that 'has an international training camp for assassins where students are sent to survive a hunt to the death'''? Otherwise, I like it!