Barbara Hoffman is a University of Wisconsin science student. She is a part-time employee at a local massage parlor. She is also a killer. Now all Detective Lulling has to do is prove it.Barbara Hoffman is a University of Wisconsin science student. She is a part-time employee at a local massage parlor. She is also a killer. Now all Detective Lulling has to do is prove it.Barbara Hoffman is a University of Wisconsin science student. She is a part-time employee at a local massage parlor. She is also a killer. Now all Detective Lulling has to do is prove it.