A Stark Files Mystery is a series where some of the stories RC Erickson has come up with do not fit into the original series, or any of the other active series.
The first book in this series would be, Vanished by the Bay.
Bobby Stark is in San Francisco for two weeks attending a criminology class at the local university. During the middle of the night, he is awakened by loud noises and witnesses a body falling past his hotel balcony.
However, there is no body, nor is there evidence this event occurred. The hotel managment insist Bobby dreamed the whole incident.
Knowing what he saw, Bobby dives into finding the truth. When all communication with Bobby abruptly ceases, Brandon jumps on the first plane to San Francisco, hoping to pick up the trail of his missing brother.