Relatives of Kate and Gerry McCann are expected to give evidence at the libel trial of Portuguese police chief Goncalo Amaral.
Mr McCann's cousin Michael Wright is expected to be among those giving evidence relating to the "damage" caused by Mr Amaral's book.
Private investigator Dave Edgar, who assisted with the search for the missing child, is also part of proceedings.
More top news
Multiple explosions in a park in a Japanese city have left at least one person dead and three injured.
Time Warner owns the Warner Bros movie studio, responsible for franchises such as Harry Potter and Batman.