The Bay is an ITV crime drama series produced by Tall Story Pictures and distributed worldwide by ITV Studios Global Entertainment that first aired in March 2019. The first two series starred Morven Christie as a detective sergeant family liaison officer. Marsha Thomason took over the leading role from series three as DS Jenn Townsend. The first series centred around an investigation into teenaged missing twins from a family living in Morecambe. The name of the series derives from Morecambe Bay, which is on the north-west coast of England in the county of Lancashire.