As we release our Year in Focus e-book highlighting the best photography from 2014, we look back at some of the big stories of the year.

To mark the 25th anniversary of the fall of the Berlin Wall, Reportage by Getty Images photojournalist Tom Stoddart embarked on a mission to discover what became of some of the nameless individuals he recorded during those momentous hours at Checkpoint Charlie and the Brandenburg Gate. He describes what happened at the time and how his search revealed remarkable stories behind his pictures.

Watch him discuss the project:

Download the free Year in Focus book on iBooks