I have heard that some of the missions from 2nd edition reference 1st edition missions, as I do not have 1st edition is this true and is it worth tracking down a copy ?
Mansions of madness 1st edition Scenarios
There are some easter eggs, minor character story elements come back. All in all there isn't anything that you would truly be missing by just going with 2nd edition.
Edited by LordPyrexOK, thank you very much!