Piotr Wereśniak. He has been a screenwriter to such films as 'Kiler','Pan Tadeusz', 'Zakochani', 'Wkręceni'. He is a director of such films as 'Och Karol 2', 'Stacja', Zróbmy sobie wnuka', 'Nie kłam kochanie'. He is a co-director of TV series, e.g. 'Kryminalni', 'Na dobre i na złe', 'W rytmie serca', 'Barwy szczęścia', 'M jak miłość'. He is an author of two novels: 'Zabili mnie we wtorek' and 'Nie szukaj mnie'.He is also an author of a popular mini guidebook for screenwriters 'Alchemia scenariusza filmowego' which can be found for free on the author's blog.