Hey peeps, 'The Vision' is probably the easiest Investigation mission of all times... Here is another Step by Step guide, all you do is travel around the map for the most part, with one little exception.
'Go To' Madame Roget.
Next 'Go To' Pyramid in the shore.
'Go To' Pumpkin Tree.
'Go To' Bee Nest.
OW!!! It looks like the first place you see when you enter Solomon Island.
'Go To' the Angel outside the church.
'Go To' Langmore Bridge.
'Kill' The Hangman Spectre.
You are 'Done'!!!!