The families of 93 British people who died in the Boxing Day Tsunami are meeting in London to find out more about how their loved ones died.
A special court has been set up in West London to investigate the disaster which struck South East Asia last year.
141 Britons are known to have died but only those whose bodies were returned home are being looked into this week.
Tributes written by the victims' relatives will be read out and the hearing is expected to last four days.
The Olympia Exhibition Centre in Kensington has been converted to host the investigation.
The court hasn't been set up to uncover who was to blame for the deaths but will answer when, where and how each person died.
But many familes want to know exactly what happened and why an inquest like this has taken so long.
200,000 people from all over the world were killed in the tsunami which hit the coastlines of Thailand, Sri Lanka, Indonesia and the Maldives amongst others.