SINGAPORE – The beloved characters of 2011’s successful Japanese television series The After-Dinner Mysteries, based on Tokuya Higashikawa’s best-selling mystery novel, have returned. This time, they’re on the silver screen.

The show’s concept is pretty straightforward. Sho Sakurai, of J-pop boy band Arashi, plays Kageyama, a dedicated and highly intelligent butler who helps his mistress, Reiko Hosho (Keiko Kitagawa), a rookie detective but who’s actually a rich heiress, solve difficult cases that come her way. We don’t want to give too much away, suffice it to say that fans will relish seeing Kageyama’s genius at work on a case that’s filled with layers of mystery, intrigue and a tinge of danger, as the duo go on a luxury cruise to Singapore.

Unfortunately, those unfamiliar with the series will find it difficult to stay invested in the characters, many of whom appear caricature-esque. They mightn’t appreciate the film’s jokes and twists too, many of which border on the absurd. The 121-minute film also doesn’t move quite as quickly as the television series. Instead, it meanders through the first third, picking up its pace only towards the middle and ending, where, quite without warning, with Kageyama miraculously reveals all in this whodunnit.

The After-Dinner Mysteries will probably do well with those who have grown to know and fall for the show’s unique characters, including Reiko’s obnoxious boss Detective Kazamatsuri (Kippei Shiina). But non-fans may want to consider catching up on the television series before stepping into the cinema.

(PG, 121 mins)