Malcolm Astley, whose daughter Lauren was killed last July, will lecture on dating violence.

Nathaniel Fujita (right) is accused of killing Lauren Astley. The couple had dated for years, but had broken up months earlier.

Malcolm Astley spoke during a memorial service for his daughter last July in Wayland.

Mourners embraced during last year's memorial service.

A prom photo showed Lauren Astley and Nathaniel Fujita when they were dating.

Fujita is accused of dumping Lauren's body in this marsh in Wayland.

A mourner held a program from Lauren Astley's memorial service last year.