Colin and Emma are at his brother Andy's wedding reception when Kevin Donovan gets a call to check on a food poisoning incident at a yacht in the harbor. Colin decides to tag along and is there when he discovers an old friend Jeremy Pearson - MI5 - undercover as an art consultant is one of the victims.

The chef, who might have accidentally included a poisonous mushroom in the canapes, is Georgina Masterson. Her father is a scientist who specializes in neurotoxins and is a colleague of Jeremy's. Georgina's father is in critical condition after ingesting a poisonous mushroom. He's in London. Jeremy has come to Maine to bring Georgina a painting by Aiofe O'Byrne that was a gift from her father and to check up on her.

Now the painting is missing and Georgina isn't sure if she accidentally put the wrong mushrooms in the canapes. And Henrietta and Oliver have arrived at Father Bracken's to add more complications to the story. Oliver had met with Georgina's father in London because the father wanted to know more about poisons in mythology. Henrietta, who works for Jeremy, is wondering if her boss has gone rogue.

The investigation is a little different for Colin and Emma since their specialties - art crimes and arms dealing - need to give way to an investigation of chemical weapons. They do great anyway.

Lots of futures are decided in this one, too, as many of the characters are asking what comes next in their lives and careers. ( )