LONDON.- Folie à Deux, French for ‘madness of two’, is the clinical definition for a psychosis in which delusional beliefs are transmitted from one individual to another. For her first exhibition at Blain|Southern, the acclaimed British artist Rachel Howard has created a series of intricately linked paintings, hung as triptychs, diptychs and stand-alone works, which subtly explore this disturbing malady. Folie à Deux can manifest itself in benign and extreme forms, and Howard was struck by a series of recorded case studies. One of these involved a paranoid married couple who both believed intruders were entering their house, spreading dust and ‘wearing down their shoes’; another documented the incident of twin sisters, one of whom provoked the other to run into the path of an oncoming car having done so herself a few seconds earlier. Howard’s body of work deals with this notion of two people f