Downloadable content (in-app purchase) for Mansions of Madness.
A Murder in Southside
What Lies Within begins with a midnight phone call from the local police concerning a murder in Southside. The officers who first investigated the murder have returned to the station with the body of a wealthy recluse, a murder weapon, and the refusal to investigate further. Your contact is quite perturbed about the whole situation and has asked you to do some poking around.
Your observation of the arcane begins with your arrival at the home of the deceased, upon which the front door swings open before you've even had a chance to insert the key. A shiver runs up your spine as you enter the narrow foyer only to begin yet another investigation in a long string of distressing incidents, increasing in frequency with every passing day.
A profound emptiness penetrates the home, breezing over the chalk outline, presumably drawn before the officers were spooked beyond recovery. Your overwhelming sense of isolation is abruptly dislodged when a cat rounds the corner, a key tied 'round its neck, and you hear a loud and unsettling sound from the supposedly vacant cellar. These are exactly the sorts of unforeseen events you've somehow come to expect, but there's something particularly troubling about this place.
A Haunted Home
Each of the scenario's four maps will present different rooms and halls through which to chase your new feline friend. Besides catching or charming the cat, you will also have to identify the sounds coming from the basement, which will be more challenging than you might expect. The home of the recently deceased holds far more secrets than just those surrounding its previous occupant's murder. While you try to determine the man's cause of death and those responsible, you will also encounter spirits grasping for a body to cling to, and still a greater mystery which lays beyond more than one obstruction. With such an aura of uncertainty, you will have to struggle to keep your focus and take the investigation one step at a time.
Not only will your starting tile differ from play to play, but there are also numerous paths to take in your exploration of the house. Four map variants, multiple endings, and a series of new, story-specific mythos events will keep you quite busy as you juggle the murder investigation, eerie happenings around the house, and a variety of encounters. How you interact with each element of the scenario will influence in which direction you can proceed and which ending you ultimately face. The extraordinary difficulty of the scenario on top of that will require deep concentration and careful calculation if you want to stifle yet another attempt to bring Arkham into the darkness.