76ee66d7_oobypedia__the_Scooby_Doo_Wiki__Motive_reason
[Suspect] Crew members [Motive/reason] 
They hated Madame Louisa for being so pushy and never saying "Thank you" to them.
Psychic Fiend Network - Scoobypedia, the Scooby-Doo Wiki
Motive/reason