During a recent police investigation, Chief Inspector Stone was interviewing five local villains to try and identify who stole Mrs Archer's cake from the mid-summers fayre. Below is a summary of their statements:
Arnold: it wasn't Edward
it was Brian
Brian: it wasn't Charles
it wasn't Edward
Charles: it was Edward
it wasn't Arnold
Derek: it was Charles
it was Brian
Edward: it was Derek
it wasn't Arnold
It was well known that each suspect told exactly one lie. Can you determine who stole the cake?