I like the mix of personal relations,the investigations & the practical applications of Mathematical / Statistical theory. Charlie & Amita are delightful characters & the family interaction all very caring & protective. As a Mathematician I obviously appreciate the theory behind some of the applications but, you do not need to be a Mathematician to enjoy the series. Am looking forward to the release of series 6 & hoping that it won't be the last, as, so many of the characters are moving onto other things.