In this week's episode, Ben Luke takes a tour of the Zurbarán survey at the National Gallery in London, speaks to the director of the Carnegie Museum of Art ahead of this year's Carnegie International in Pittsburgh, and learns about a Walter Sickert painting on view at Charleston in Sussex.

The exhibition at the National Gallery will also include newly discovered works

We round-up the biggest shows opening each month

The Portuguese artist mounts the first contemporary exhibition to be installed alongside the Duke of Alba’s fabled art collection

Many pieces on show in the Spanish Gallery are from the personal collection of financier Jonathan Ruffer, the main backer of a £150m regeneration project in Bishop Auckland