Wasgij? Retro Mystery Puzzle 9 - Great Train Robbery! (1000pc)

Jumbo – Wasgij Retro Mystery 9 – Great Train Robbery 1000 Piece Jigsaw Puzzle

⁠⁠⁠⁠The Picture on the Box is not the picture on the puzzle. It is just a clue.
Where it all began!  Don’t puzzle what you see, puzzle what happens next!
The passengers have been robbed! But who could have done it, and where have they stashed the loot? The gentleman detective must think quickly if he is to stop the thieves in their tracks! That is the scene you have to puzzle.