Professor Jameson stood at the edge of the time machine, his eyes fixed on the date display: April 14, 1912.

"Are you sure this is wise?" his colleague, Dr. Lee, asked.

"We must warn them," Jameson replied. "The Titanic's fate is sealed. We can save thousands."

As they emerged on the ship's deck, Jameson's mind reeled with the implications. Changing history's course would rewrite the future.

They...