The Empty Grave

Upon learning that Marissa Fittis, the founder of the largest ghost-fighting agency in London, had not actually died many years ago, we decided to sneak into her tomb and open the coffin. Indeed, instead of the deceased, there was a wax... doll in the coffin.
 
But who is running the agency then?
And how did Marissa manage to live so long and look so young?
 
But it seems we are not destined to get answers to these questions, because we started receiving threats, and then the Fittis agency even sent goons to our home. To escape certain death, my friends and I need to cross to the Other Side, the world of ghosts.
 
Having dared to embark on such a dangerous venture, we are taking a significant risk, but what if we manage to uncover Marissa's secret after all?
 
After all, as is well known, her agency has been conducting experiments for many years, traveling to the Other Side. But we had no idea what horrifying truth would be revealed to us. It seems we have come very close to solving the Problem and will soon find out the answer to the question – why have ghosts inundated England...