Gone Again

''It''s just to say that no-one has come to pick Nathan up from school, and we were wondering if there was a problem of some kind?''As Mark Douglas photographs a pod of whales stranded in the waters off Edinburgh''s Portobello Beach, he is called by his son''s school: his wife, Lauren, hasn''t turned up to collect their son. Calm at first, Mark collects Nathan and takes him home but as the hours s...