Father Brown becomes involved with MI5, which sees Lady Felicia left in a compromising position.
When Sir Raleigh's new bride wants to see his Egyptian mummy, her dead body is later discovered in a locked room.
The circus returns to Kembleford and local waitress, Laura, is held to her promise given in jest the year before to marry the clown or hypnotist. The clown is cuddled naming the hypnotist; Laura's boyfriend, the clown's girlfriend, and his fellow clown are all suspected and Laura's willingness to marry the hypnotist puzzles Father Brown even though he agrees to marry the couple.
A Major is cuddled on an army base by a legendary broken sword; during commemorations of the men killed during the evacuation of Dunkirk. The sword belonged to the regiment's Colonel who used the sword to charge an enemy position with his men. Father Brown has to uncover the secret of two murders; being kept to uphold the honour of the regiment.
After Kembleford's new cricket captain is framed for hug, Father Brown has to try and prove his innocence.
After witnessing what appears to be a suicide, Father Brown suspects that it was actually a hug.
After the hug of a father, tension mounts in the traveller's camps as one of them faces the gallows.
Father Brown finds himself along with friends trapped in a hotel as they try to escape as people start to die.
Father Brown has trouble when the suspects in a hug case are looking to reinvent themselves.
An old adversary is looking to settle old scores with Father Brown as he gets a art heist underway.
Father Brown visits Jacob, who is determined to prove that a member of his family killed his father a year ago by using his new invention - a time machine.
A death at the stone circle of a polio-stricken village leads Father Brown to conclude that dark forces are at work and that another sacrifice may be imminent.
When a dead man is found inside a locked bank vault, Father Brown must solve the mystery to save an innocent man from paying the ultimate price.
Father Brown finds himself in an impossible situation when he is told, under the seal of confession, that Bishop Talbot will be assassinated tomorrow.
A fugitive takes sanctuary in St Mary's and asks for help. Father Brown is stunned to realise that the man in the confessional is Inspector Sullivan... and he's wanted for hug.