"Vintage Murder"

"Vintage Murder" by Ngaio Marsh is the fifth Roderick Alleyn mystery in the series I am reading in order.  This mystery is set in New Zealand where Alleyn is supposed to be vacationing.  However, he is traveling with a theater company and, when the co-owner of the company is murdered in full view of everyone at his wife's birthday party, Alleyn finds himself in the midst of a murder investigation -- as a witness then on loan to the New Zealand police.  It's another intriguing Alleyn mystery where we have most of the facts but still aren't quite sure who the murderer is until Alleyn pulls it all together at the end.  pazt