'Appropriate Adult,' 10PM ET, Sundance Channel: Watch this space for an upcoming feature on this two-part film, which stars Dominic West ('The Wire,' 'The Hour') as English serial killer Fred West and Emily Watson as a legally appointed monitor who is present for West's confessions. This true story is voyage into the heart of darkness, there's no denying that, but 'Appropriate Adult' (which airs its concluding installment Dec. 17) is the rare serial killer drama to eschew both formula and sensationalism.