InsideNo.9returnstoBBCTwoonThursdaythe26thofMarchforsixmoreingeniousgenreslicesofhorror,suspenseandpsychology.Thosewhowererattledandgrippedbythefirstroundofhalf-hourplaysfromStevePembertonandReeceShearsmithknowtoexpecttobeskilfullysucker-punchedwithsharp,tricksywritingandwell-drawncharacters.