Dyfed Edwards is one of Wales's most accomplished cross-genre writers—a novelist, dramatist, experienced journalist and once a singer-songwriter. Originally from Rhosmeirch, Anglesey, he has published twenty books of fiction and non-fiction.

Edwards's journalistic experience provides crucial authenticity to his crime writing, lending his police procedural elements the ring of truth while his deep knowledge of Anglesey life and culture creates richly atmospheric settings. His background in journalism also informs his approach to narrative structure, creating tightly plotted stories.

Some of his previous works of fiction in Welsh are:

Dant at Waed (Y Lolfa, 1996), Cnawd a Storïau Eraill (Y Lolfa, 1997), Y Syrcas (Y Lolfa, 1998), Llwybrau Tywyll (Y Lolfa, 1990), Hen Friwiau (Gwasg Carreg Gwalch, 2002), Y Moch a Straeon Eraill (Gwasg Carreg Gwalch, 2007), Iddew (Gwasg y Bwthyn, 2016), Apostol (Gwasg y Bwthyn, 2019), Bedydd Tân (Gwasg y Bwthyn, 2021)

As a non-fiction writer he has published two books about male criminals : Dynion Dieflig (Y Lolfa, 2008) and Peter Moore: Y Gwaethaf o'r Gwaethaf, Stori Sydyn (Y Lolfa, 2009)

As a dramatist, Edwards has achieved exceptional recognition, winning the prestigious Drama Medal at the Cardiff National Eisteddfod in 2008 for his full-length play Cors Oer (Cold Marsh), then claiming the prize for a second time at the Bala National Eisteddfod in 2009 with Tân Mewn Drain (Fire in Thorns).

In English he writes in the horror genre under the pseudonym Thomas Emson. Foreign rights to his titles have sold to the U.S., to Turkey and to Italy.

He now lives a stone's throw from the seafront in Whitstable, Kent with his wife, ghost-writer Marnie Summerfield Smith, and their dogs Moose and Scout.