"I thought “Humpday” was an unusual and good film, so was really looking forward to “Your Sister’s Sister”. I found myself fidgeting for the first 10 minutes but then settled into this film. The relationship between the three characters works well and is fairly believable. The “When Harry Met Sally” thing of sex always getting in the way of female and male friendships sprang to mind, and occasionally I wondered how Iris and Jack hadn’t got it together before then. But the awkwardness of the situation when Iris turns up at the lake house is very well done – very well acted. I liked this film. 5/10 or 3 stars."