Dirgelwch Gallt y Ffrwd (E. Morgan Humphreys)

Ac yna daeth sŵn arall, sŵn gwyliadwrus, araf, sŵn y buasai'n hawdd i ddyn oedd heb fod yn gwrando fethu ei glywed... Yr oedd ffenestr y stydi yn agor yn araf. Ac yna, tra gwrandawai, clywai sŵn rhywun yn dyfod i mewn.

"Daliwch eich dwylo i fyny!" meddai Aubrey, yn uchel, gan daflu drws y stydi yn llydan agored â'i droed a goleuo'r fflachell fawr a ddaliai yn ei law chwith. Yn ei law dde yr oedd ei refolfer yn barod i waith...

Sent to a quiet area on the Welsh coast in search of a stolen precious stone, the famous detective John Aubrey is drawn into a web of plots following the discovery of a local man's dead body.

Before long he finds himself in the midst of a web of lies where nobody can be trusted, facing mysterious adversaries who won't hesitate to kill again.

The second and longest story to feature the detective John Aubrey, Dirgelwch Gallt y Ffrwd ('The Mystery of River Heights') was originally published in 1938. Its author's longest and most ambitious novel, it was a milestone in crime and adventure fiction in Welsh.

Paperback, 232pp.