Llwyddodd y gyfres gyntaf i ddenu'r gynulleidfa fwyaf ar gyfer drama ar BBC Wales mewn mwy nag 20 mlynedd. Ar ôl cael eu gweld fwy na 15 miliwn o weithiau ar iPlayer, cafodd ei phrynu gan BBC Network a'i dangos gyda llwyddiant mawr ar BBC One.
The first series was the highest viewed drama on BBC Wales in over 20 years. After achieving over 15 million views on iPlayer it was bought by the BBC Network and has just finished a hugely successful run with BBC One nationwide.