The Lost Psycho Killer is a high-performance shortboard designed as a refined version of the popular Quiver Killer, aiming to provide more versatility. It excels in a wide range of conditions, from thigh-high to well overhead, and is suitable for surfers from intermediate to advanced levels. Its design focuses on generating speed, particularly in average or less-than-ideal surf, making it a valuable addition to a quiver. Key features include a two-stage hidden volume distribution through the middle and chest area for improved paddle power and stability, a wider nose with a slightly more forward wide point, and a tailored nose rocker. The tail has been significantly updated from the Quiver Killer's rounded pin to a double-bump swallowtail, designed to break up water flow, reduce foam, and enhance maneuverability and release into turns, making it more precise and snappy. The board also incorporates aggressive single-to-double concave, providing lift and speed, and features a continuous rocker for responsiveness. The carbon wrap construction offers a lively feel, increased directional drive, and a true flex, maintaining its pop and surfability for longer compared to PU boards. While highly praised for its speed generation, maneuverability, and all-around performance, some reviewers noted it may lack the extreme hold needed in very powerful, hollow waves for heavier riders. Its versatility makes it a strong contender for travel boards.