Quinn Learns to Dream Walk

Quinn and Ridley have a new ghost friend who teaches Quinn how to dream walk in order to locate her lost friend Nora. But all is placed on hold when a murder occurs. Someone is poisoned with jellyfish toxins and the team must figure out who is using their oceanic friends to kill an unsuspecting victim.
Was it the hardworking yet under appreciated assistant, a former reporter who was minimized and trolled by the scientist, or Quinn's ex-boyfriend who has popped up unexpectedly?
Will Penny find out more about her magical friends....perhaps more than she ever bargained for? And will this put a crimp in her relationship with Robin?