Best Medicine

Martin struggles with his blood phobia as a mermaid washes ashore in Port Wenn, astonishing everyone. Judith, on prescribed oxygen, causes chaos. Louisa consults Martin's girlfriend Eden for medical advice. Greg and George face challenges despite their sea urchin boom success.

When the Port Wenn pharmacy is robbed, including Louisa's critical time-sensitive medicine, Martin deduces that the culprit desperately needs his help. Meanwhile, Greg and George clash with a rival food truck owner, Sarah tries to bond with Eden, and Martin is on the receiving end of a special brand of Port Wenn affection.

As the citizens of Port Wenn get competitive during their annual floating crate race, Martin urgently tries to give important medical advice when three men have positive pregnancy tests. Meanwhile, Eden learns she wants to be liked after her singing 'causes' a man to pass out and former record-holder Sarah coaches Peter in the art of crate racing.

As Martin desperately tries to leave Port Wenn to meet Eden in Boston for the weekend, he must first investigate the extremely strange behavior of three patients who have all recently visited a meditation retreat. Also, Mark is affected by the high school's graduation and Sarah's first guest in her rented spare room is non other than ex-paramour Eddie McCroy

When the wife of a traveling magician duo dies at the Salty Breeze, Martin must help the husband who is unable to grasp that she is gone. Also, Eden finds a letter Martin wrote to Louisa thinking it was for her and Martin gets a new male medical monitor (guest star Jack Cutmore-Scott) who has an instant connection to Louisa.