Complex sentence: The students attending the experiment are Walter, Wyndham, Kelly, and Catherine, a metaphysican named Marsh (Jameson Parker), Lisa, a theology student who can translate ancient scriptures, Susan, a professional radiologist, and Dr. Lahey.
Split into simpler sentences: The students attending the experiment are Walter, Wyndham, Kelly, and Catherine. Among these people investigating this is a Metaphysican who is named in the film as Marsh (Jameson Parker), Lisa, a theology student who can translate ancient scriptures, Susan, a professional radiologist, and Dr. Lahey.