Imagery was rear-projected onto six screens using five projectors, which provided the settings of the many locations throughout the show.
My responsibilities included:
Staged without actors or sound
Upper Left: Video of a dummy being "hung" in silhouette, slowed down and superimposed over stock fog footage. Used at the close of Act 1 to make the audience think Sherlock has just hung Watson. (In Act 2 we find out that he hung a look-alike corpse to keep the real murderer from killing Watson)
Upper Right: Video of the silhouette of one actor pushing another actor in a wheelchair, superimposed over a brick wall. Used to set up the murder scene that Sherlock then investigates. (One pushed the other off a bridge into a river, and then fell in after him, we learn. We later find out that both of them were dead before they went into the water and the scene was a coverup.)
Lower Left: A coded letter from an agent that Mycroft and Sherlock Holmes unscramble. The odd shape of the letter is because it is on the back of a piece of a flyer that says "Rome Eat All", an letter that was used as a prop on the stage and also in the projection design in multiple instances.
Lower Right: A heavily edited piece of stock footage meant to symbolize a death via the spillage of a poisonous vial.
Source images on left, final images on right