Continue the story …
The protagonist from “The Sea Devil” is a more specific character – but he must be a character from a story you have studied. Any other character you choose to add must also be a character from a story you have read. Continue the story.
Examples:
The protagonist is actually Neville from “The Tower.” Write a new ending in which he returns to the house and begins a conversation with his wife, Kay.
Imagine that the protagonist is actually, Mr. Berryman, or Martin Collingwood, or better yet, Bill Kline.
Imagine the protagonist is an immigrant from New Zealand. Transform him into grown-up Ned from “The Quiet One” and have him meet up with Sid and Wally for breakfast the next morning.