For their 2021 R+D Residency at home, Marsian De Lellis spent time developing and researching the script for Model Killer: Giant Crimes + Tiny Cover-Ups. Model Killer is a solo immersive puppetry and performing object installation centered on a disgruntled dollhouse maker turned investigator, Vivian Nutt, who builds dioramas of unsolved murders, only for it to be revealed that she is in fact, a serial killer.