From their website:
A promising professor has absconded with university property – an ancient and mysterious silver tablet. Now, you’ve been hired to search her manor for clues to her whereabouts… all while treating the matter with the utmost discretion. But what darker secrets does the tablet hold, and why did Professor Wolcott cut off all communication with the outside world?
The Silver Tablet is the second Print on Demand story expansion for Mansions of Madness, and it is now available through our webstore. With half of its never-before-seen cards offering exciting new items and encounters, The Silver Tablet tasks players with solving the horrifying mystery behind an ancient artifact… all while resisting its sinister powers.