A Party To Die For — Gillian Larkin

A Short Murder Mystery
Julia Blake's Third Murder Mystery
Julia Blake runs her own cleaning business and has been working for Fiona Doyle for a few years.
When Fiona's daughter has a party, Julia helps her sister to do the catering. Fiona is in a bad mood as she tries to organise everything. Julia can see that Fiona needs a rest and suggest she has a lie-down.
An hour later Julia discovers that Fiona has been murdered in her bed.
Which one of the party guests killed Fiona? Julia is determined to find the murderer.