The Star Wars sequels never mentioned what happened to Luke Skywalker's green lightsaber – but The Last Jedi's novelization might have the answer.

Where or who has Luke's green lightsaber is a mystery, but Star Wars: The Rise of Skywalker could bring it back to redeem Kylo Ren. Here's how.

One of the many plot holes Star Wars: The Rise of Skywalker has to solve is where Luke's green lightsaber is – and a fan theory suggests R2-D2 has it.