Art dealer Philip Mould and journalist Fiona Bruce investigate whether artworks submitted by members of the public are actually genuine, important undiscovered works.
The latest batch of five episodes will cover works purporting to be by artists Henry Moore, Henri de Toulouse-Lautrec, Alberto Giacometti and William Nicholson.
This season will be the first time the show has featured sculptures – previous episodes have focused on pictures.
The new series includes an episode investigating whether a French owner has two sketchbooks by Toulouse-Lautrec.
Another episode focuses on a still-life titled Glass Jug with Plates and Pears that was bought by its owner as a genuine work by British artist Nicholson. Having paid £165,000, its authenticity was subsequently questioned, making it worth just a few hundred pounds.
The owner hopes Mould and Bruce will be able to help her find the evidence needed to restore the painting to its former status and value. The show also features two portraits offering a glimpse into the lives of black Britons in the 18th and 19th centuries.
Mould said: “It never fails to surprise me how much is out there - from the prospectively exciting and overlooked, to the downright sinister. These five cases take us far and wide, from Canada to Switzerland, using sophisticated art forensics combined with old-fashioned connoisseurship to achieve some astonishingly unexpected answers.”
The BBC show first aired in 2011. An interview with Fake or Fortune? presenters Mould and Bruce was published last year by ATG (No:2304).