Fans of light-hearted adventure games will get a special treat this spring as Relentless Software is offering the first episode of its family-friendly mystery series Blue Toad Murder Files for free on the PlayStation Network.

The six-part series casts players as an investigator attempting to solve a variety of crimes in the small English village of Little Riddle. The first episode, Little Riddle's Deadly Dilemma, kicks off the series with the murder of the local mayor and has players continue from there, interviewing witnesses and solving puzzles that yield useful clues until they have enough information to finger a suspect. The game supports up to four players in co-operative play and can be played using the standard controller or the new Move peripheral.

The first episode will be free in Europe, Australia, and New Zealand from April 13th to the 27th and in North America from April 19th to May 3rd. If you enjoy your time in Little Riddle, you can pick up the remaining five episodes for £7.19 or $9.99.

We reviewed Blue Toad Murder Files in episode 1-3 and 4-6 installments last year, but now you can draw your own conclusions without risk.