One of Us is Missing - B.M. Carroll

There's no such thing as safety in numbers ...
Rachel and Rory Sullivan decide to celebrate making it through a difficult year by taking their teenagers, Emmet and Bridie, to their first ever stadium concert. By the end of the night, one of the four has vanished without a trace.
As the police investigation intensifies, suspicion is cast on the remaining family members. Everyone has been deceiving one another, but who is to blame for what went wrong? The passing of each hour amplifies their terror that life will never be the same again.
One of Us is Missing is a dark domestic thriller about the dangers lurking right in plain sight.