S13:É08 - S13:E08 - Fit for Murder

Barnaby reluctantly accompanies Joyce on a spa weekend to Swavely Manor. But as he attempts to de-stress, a woman is found dead in the flotation chamber. He abandons his treatment to investigate, but his personal worries are never far away as he contemplates his future, while trying to determine if an argument between the spa's owners and their neighbours is the motive, or something else.