Nicky Philipps needs help in determining whether a mysterious painting housed at Picton Castle in Pembrokeshire is a genuine piece of work by French Impressionist Pierre Auguste Renoir.

Fiona and Philip are at a church in Lancashire, once patronised by Yorkshire's famous Bronte sisters, that is the home of a painting thought to have been made by an Italian old master.

Fiona and Philip attempt to help Under-Sheriff and Secondary of London Charles Henty find out whether two paintings in his possession are as valuable as he believes.