A father instead of a brother
Shared interests deepen the reunion.
Supporting source ↗CASE FILE · S15 E06

Dennis and Dee explore their new accommodations in the countryside; Frank accompanies Charlie to find the truth about Charlie's Irish childhood pen pal; Mac has an identity crisis and decides to join the seminary.
THE SHORT VERSION · SPOILERS AHEAD
Shared interests deepen the reunion.
Supporting source ↗Mac requests an unattractive guide.
Supporting source ↗Dennis’s untreated fever drives threatening hallucinations.
Supporting source ↗Charlie chooses Shelley’s spare room, leaving Frank alone.
Supporting source ↗THE EVIDENCE
Brother Thomas is introduced as a potential guide for Mac.Source ↗
Charlie explains his unusual language skills to Shelley.Source ↗
Dee checks her phone inside the castle.Source ↗
Dennis struggles to suppress his cough at the realtor’s desk.Source ↗
Father Michael discusses Mac’s proposed vocation.Source ↗
Frank ends the night alone on the cot.Source ↗
Shelley recognizes Charlie at the cheese counter.Source ↗
The realtor listens to Dennis and Dee’s demands.Source ↗
Dee storms out of the country pub.Source ↗
Cheeses and preserves fill Shelley’s shop.Source ↗
Shelley brings Charlie and Frank to his home.Source ↗
Dee explores the weathered interior of their castle rental.Source ↗
In his feverish fantasy, Dennis grips an axe while pursuing Dee.Source ↗
Father Michael wears a large cross.Source ↗
Frank eats the stew intended to wake Dee.Source ↗
Dennis and Dee seek a castle rental.Source ↗
The recording accompanies Mac seeing Brother Thomas.Source ↗
Father and son share a spontaneous song.Source ↗
Feverish Dennis converses with the castle.Source ↗
Dennis’s worsening illness disrupts the rental appointment.Source ↗
Charlie reads Irish but cannot speak it.Source ↗
Tags document researched occurrences, not every appearance. Read the research notes and attribution.