Jane Austen's last, fragmented work, picked up and completed in a screenplay by Andrew Davies, continues on MASTERPIECE. Entrepreneurs, love interests, legacy hunters, hypochondriacs and medical mountebanks come together at a struggling resort aimed to be the next fashionable playground in early 1800s England. In tonight’s episode: At loggerheads over the disappearance of Miss Lambe, Charlotte and Sidney comb the London underworld to find her. Meanwhile, Tom tries to save Sanditon and his marriage, and Edward and Clara hatch a cunning plot to seize Lady Denham’s legacy.

Watch it tonight at 9pm on WGBH 2.