Tobin's Spirit Guide, often referred to simply as Tobin's is a fictional guide book from the fictional universe of the Ghostbusters franchise. It was first introduced in 1984 in the movie Ghostbusters. After its first reference in Ghostbusters it was referred to several times in other productions of the franchise, e.g. the Ghostbusters video games.
Tobin's provides information about miscellaneous ghosts, spirits, spectres, demons, deities, etc. It is generally used to look up the history, strength and weaknesses of certain supernatural beings. It is quite extensive, providing for example information about the three ghosts of Christmas (Ghost of Christmas past, Ghost of Christmas present, Ghost of Christmas future) and various figures from ancient mythologies, such as Fenris and Surt.
It is unclear when it was written and what the background of the author was. It is only known that the author's name was Tobin (Portram Campbell Tobin)[1] and that it was written some time in the early 20th century.[2]
Tobin's Spirit Guide has become so famous that several nonfictional books have been released using the title Tobin's Spirit Guide.[3]