| Age at missing | 36 |
| Case ID | robert-louis-arcaris |
| City en | Las Vegas |
| City geo ID | 5506956 |
| City slug | las-vegas |
| Classification | Lost/Injured Missing |
| Classification en | Lost/Injured Missing |
| County en | |
| County fips ref | 32003 |
| County slug | clark |
| Created at | |
| Date of birth | |
| Disappearance details | Lake Mead east of Las Vegas |
| Disappearance details en | Lake Mead east of Las Vegas |
| Disappearance details word count | 61 |
| Distinguishing marks | scar on right cheek, forehead, and near right eye |
| Distinguishing marks en | scar on right cheek, forehead, and near right eye |
| Full name | Robert Louis Arcaris |
| Full name en | Robert Louis Arcaris |
| Height | 5'10" |
| ID | 435 |
| Investigating agency | Las Vegas Metropolitan Police Department |
| Missing since | 1987-10-12 |
| Official last updated | 2025-10-08 |
| Official update count | 1 |
| Official update history | casefile added. |
| Path | nevada/clark/las-vegas |
| Race | White |
| Race en | White |
| Sex | Male |
| Source info | Las Vegas Metropolitan Police Department NamUs |
| State en | Nevada |
| State ref | NV |
| State slug | nevada |
| Status | active |
| Updated at | |
| URL path | nevada/clark/las-vegas |
| Weight | 140 lbs |
Lake Mead east of Las Vegas