With this catchy title Nick Laan will contribute to TEDx Amsterdam “Beyond the Walls” on November 28, 2014. Nick is a PhD student in the field of fluid dynamics at the Netherlands Forensic Institute (NFI) and the Van der Waals-Zeeman Institute (WZI). In his research he examines how the reconstruction of a blood drop's trajectory can be improved by taking gravity into account. In order to do this, the speed of a blood drop needs to be determined from a dried bloodstain. Recently, an article on this aspect of his research was published in Physical Review Applied ( PHYSICAL REVIEW APPLIED 2 044 018 (2014) ). In his contribution to TEDx Amsterdam Nick will discuss both physical and forensic aspects of his research, that is supervised by Karla de Bruin from the NFI and Daniel Bonn from the WZI.