The masks that Mark had made with the party imagery on it were selling out fast. - Spidersilk the novel

"Obviously you have good taste - much like myself. One reason I like you." - Mark from Spidersilk the novel

“Mark opened his hand, and in his palm, a large luminous question mark appeared. It [The Creature] turned with beady little yellow eyes, looking his way and slowly circling him. Suddenly, it dashed his way.”_Spidersilk the novel

In Spidersilk the novel, the intruders are blind. However, they do have heightened senses in other degrees. For instance, in the novel, when Dacian approaches Chris while he’s working in his office he knows he’s there because his senses begin to tingle. This is actually a common occurrence in our own world when people lose a sense. Even in pop culture we can see some superheroes with heightened senses due to a loss of another! Take for instance, Daredevil who is also blind. Want to know more? Check out this link: http://www.sciencedaily.com/releases/2012/05/120508152002.htm

“Very shortly, his physical face changed slightly and his third eye exposed its self. The black mist rescinded nearly instantaneously. Utilizing his ‘eye’ he could see all sorts of dark mists around him.”_Spidrsilk the novel

In Spidersilk the novel, Mark is visited by ghosts who try to invade his and his friend’s lives. These ghosts were from another dimension, but like the many theories revolving around ghosts, they probably needed energy to feed on in order to communicate. This energy could have been channeled via Mark’s aura as we know Mark had a strong energy around him throughout the book. This handy link shows a lot of interesting details about ghosts!
http://manchesterparanormal.org/Recharging-Energy.php

It's as if the outside is now reflecting my style here on the inside. Awesome. - Mark from the novel Spidersilk