Annie Besala Ekofo, 53, and 21-year-old psychology student Bervil Kalikaka-Ekofo were shot at a flat in East Finchley in September 2016. Obina Ezeoke, 25, is now on trial for murder.
The British son of the hate preacher Omar Bakri Mohammad is reported to have been executed while fighting with the terror group ISIS in Syria.
Images published by an anti-ISIS activist in Syria show a man kneeling in a red jumpsuit while a young boy points a handgun at his head.