
Elaine O'Hara disappeared from Dublin in August 2012. Her remains were discovered more than a year later in the Dublin Mountains. The investigation became notable for the recovery of digital evidence that reconstructed her contact with architect Graham Dwyer.
Items found in a reservoir, including mobile phones and other personal objects, helped investigators recover messages and location evidence. Prosecutors argued that Dwyer had manipulated O'Hara and arranged the meeting that led to her death.
A jury convicted Dwyer of murder in 2015, and he received the mandatory sentence of life imprisonment. Subsequent litigation examined the handling of mobile-phone data, but the murder conviction remained in force.