This was originally released as "Mystery 101", but when later films in the series were made, the title of this was amended to "Mystery 101: Death, Disappearance and Deceit"
Jill Wagner and Kristoffer Polaha were both in Pearl in Paradise (2018), where both were similarly the romantic leads.
The song "Who Can it Be Now?" that is playing during the opening scenes, is used again in opening scenes of other Mystery 101 movies.