When Amber (****) was shown earlier this year in Ireland, the crime series created by Rob Cawley and Paul Duane for state broadcaster RTE caused a kerfuffle as (giving nothing away) it didn't follow the usual narrative of teenager-goes-missing-police-miss-clues-and-family-implodes drama. But that's all yet to pan out, and last night's opening episode of four started traditionally enough as Amber, the 14-year-old daughter of Ben and Sarah Bailey, lied to her parents about visiting her friend and didn't arrive home when expected.