The Beast Within: A Gabriel Knight Mystery (also known as Gabriel Knight 2 or GK2) is a computer adventure game released by Sierra On-Line in 1995. Unlike the original Gabriel Knight released in 1993, The Beast Within was produced entirely in full motion video. The technology was popular at the time of the game's production with the recently introduced storage capabilities of CD-ROMs, but was expensive to produce and led to a linear storyline. The third Gabriel Knight game used a rendered 3D engine a few years later instead. [source:wikipedia]