In this database you will find the victims by last name, O through Z. The nature of each case is indicated e.g. homicide, missing, unidentified, lynching, wrongful conviction, etc. If you want to know more about the case, click on the link in the last column. It will take you to a page with all the posts in which the victim’s case is discussed.
| Last Name | First Name | Country | Case | Year | Link |
| O | |||||
| Oberbroeckling | Paula Jean | USA | Homicide | 1970 | Link |
| Oberst Family | Elsie, William, and five of their six children | USA | Homicide | 1928 | Link |
| Ogunyemi | Oluwaseyi | UK | Homicide | 2009 | Link |
| Oliver | Bernard Michael | UK | Homicide | 1967 | Link |
| Ombler | David | UK | Homicide | 1914 | Link |
| Orange County Jane Doe | Anita Louise Piteau | USA | Unidentified/Homicide | 1968 | Link |
| Orcutt | Teryl Lynn Steele | USA | Homicide | 1990 | Link |
| Oronoque Rd John Doe | USA | Unidentified | 1992 | Link | |
| Osceola | Owachige Elice | USA | Homicide | 2013 | Link |
| Otto | Joanna Kay | USA | Missing | 1992 | Link |
| P | |||||
| Paisley | Coe Caroline | USA | Homicide | 1994 | Link |
| Parker | Eleanor Celeste | USA | Missing | 1981 | Link |
| Patterson | Beth Ann Brown | USA | Homicide | 1978 | Link |
| Peak | Marie "Lisa" | USA | Homicide | 1976 | Link |
| Pennington | John William | USA | Homicide | 1985 | Link |
| Percy | Valerie Jeanne | USA | Homicide | 1966 | Link |
| Perez | Anibal | USA | Homicide | 2013 | Link |
| Peterson | Henry W. and Ann M. | USA | Homicide | 1978 | Link |
| Petreikis | Petronella | USA | Hit-and-Run | 1952 | Link |
| Pfeifer | Elizabeth Anne | USA | Missing | 1986 | Link |
| Pickavance | Lesley Anne | UK | Missing | 1990 | Link |
| Pimentel | David Etienne | USA | Homicide | 2014 | Link |
| Pockett | Janice Kathryn | USA | Missing | 1973 | Link |
| Potes | Tamara & Wistong | USA | Homicide | 1992 | Link |
| Potts | Beverly Rose | USA | Missing | 1951 | Link |
| Prince | Christine | Canada | Homicide | 1982 | Link |
| Princes in the Tower | UK | Historical Mystery | 1483 | Link | |
| Prior | Sharron Kim | Canada | Homicide | 1975 | Link |
| Pulaski County Jane Doe, identified as Karen Kaye Knippers | Karen Kaye Knippers, further details under her own name | USA | Identified May 2021 | 1981 | Link |
| Q | |||||
| Quinters | Paul Bernard | USA | Homicide | 1993 | Link |
| R | |||||
| Ramirez | Theresa Marcelina | USA | Homicide | 1993 | Link |
| Ream | Paula | USA | Remains stolen | 2010 | Link |
| Rev. Reeb | James Joseph "Jimmie Joe" | USA | Homicide | 1965 | Link |
| Reid | Mary Frances | USA | Homicide | 1963 | Link |
| Renville | Lakota Rae | USA | Homicide | 2005 | Link |
| Resk | Michael Leo | Canada | Homicide | 1955 | Link |
| Richey | Kenneth Thomas | USA | Wrongful Conviction | 1987 | Link |
| Ridulph | Maria Elizabeth | USA | Homicide | 1957 | Link |
| Rosencrans | Deborah Lynn | USA | Homicide | 1977 | Link |
| Ross | Sandra Kay | USA | Missing | 1984 | Link |
| S | |||||
| Schnoll | Julius | USA | Homicide | 1979 | Link |
| Schultz | Gail Lee and Paul G. | USA | Homicide | 1953 | Link |
| Schwochert | David Mark | USA | Homicide | 1973 | Link |
| Seaburg | Albert Edwin | USA | Homicide | 1997 | Link |
| Sergie | Sophie | USA | Homicide | 1993 | Link |
| Shepherd | Sally | UK | Homicide | 1979 | Link |
| Sherrill | Shannon Marie | USA | Missing | 1986 | Link |
| Shookman | Brian Edwin | USA | Missing | 2012 | Link |
| Short | Elizabeth | USA | Homicide | 1947 | Link |
| Shubin | Nie | China | Wrongful Conviction | 1955 | Link |
| Silcock | Mike | UK | Homicide | 2009 | Link |
| Silves | Vicki Jo Dodd | USA | Homicide | 1997 | Link |
| Simmons | Shawn | USA | Homicide | 1995 | Link |
| Sims Family | Robert Wilson, Helen Sollie, and Joy Lynn | USA | Homicide | 1966 | Link |
| Sinclair | Tina Marie & Bethany Anne | USA | Missing | 2001 | Link |
| Sison | Annie Pladevega | USA | Homicide | 1993 | Link |
| Siwiak | Henryk | USA | Homicide | 2001 | Link |
| Skinner | Henry "Hank" Watkins | USA | Wrongful Conviction | 1993 | Link |
| Smith | Myrtle M. Sayers | USA | Homicide | 1930 | Link |
| Smith | Patricia Louise | USA | Homicide | 1984 | Link |
| Sodder Children | Maurice, Martha, Louis, Jennie, and Betty | USA | Missing | 1945 | Link |
| Soering | Jens | USA | Wrongful Conviction | 1985 | Link |
| Sohus | Linda & John | USA | Homicide/Missing | 1985 | Link |
| Solomon | Dana Michelle Speights | USA | Hit and run | 2006 | Link |
| Soules | Gerard Homer | USA | Homicide | 1992 | Link |
| Spence | Alex | UK | Accidental Death | 2010 | Link |
| Spickler | Deborah “Debbie” Lee | USA | Missing | 1968 | Link |
| Stanaway | James "Jimmy" Vincent | USA | Homicide | 1990 | Link |
| Starkloff | Emily Johanne Carmela | USA | Hit and run | 2008 | Link |
| Stidham | Dana Lanell | USA | Missing | 1989 | Link |
| Stevenson | Sigrid M. | USA | Homicide | 1977 | Link |
| Stone | Sonia Carmen Herok | USA | Homicide | 1981 | Link |
| Stubbs | Tiffany Robin | USA | Homicide | 1988 | Link |
| Sullivan | Dennise Jeannnette | USA | Missing | 1961 | Link |
| T | |||||
| Tatman | Robert Lawrence | USA | Homicide | 1967 | Link |
| Tidwell | Dorothy "Dottie" Rowden and Robert "Bob" | USA | Homicide | 1983 | Link |
| Thomas | Lisa | USA | Homicide | 1974 | Link |
| Thompson | Kimberly Ann | USA | Missing | 1986 | Link |
| Toronto John Doe | Canada | Unidentified | 1989 | Link | |
| Torres | Amparo Arias | USA | Homicide | 1981 | Link |
| Turpin | Lysandra Marie | USA | Missing | 1988 | Link |
| V | |||||
| Vaatstra | Marianne | Netherlands | Homicide | 1999 | Link |
| Van Camp Murders | Annie and William | USA | Homicide | 1940 | Link |
| Van Meter | David Alonzo | USA | Homicide | 1975 | Link |
| Vaughan | Patty Inez Brightwell | USA | Missing | 1996 | Link |
| Verstappen | Nicky | Netherlands | Homicide | 1998 | Link |
| VonAllmen | Michael | USA | Wrongful Conviction | 1981 | Link |
| W | |||||
| Waggoner | Richard Lee | USA | Homicide | 1981 | Link |
| Wallace | Julia Dennis | UK | Homicide | 1931 | Link |
| Watson | Donald Ray | USA | Homicide | 1978 | Link |
| Watson Jr. | John David | USA | Homicide | 1974 | Link |
| Welch | Michella | USA | Homicide | 1986 | Link |
| West | Audrey Anne | USA | Homicide | 1985 | Link |
| White | Lisa Joy | USA | Missing | 1974 | Link |
| Williams | April Nicole | USA | Missing | 1983 | Link |
| Williams | Edward "Edd" | USA | Homicide | 1974 | Link |
| Willingham | Cameron Todd | USA | Wrongful Conviction | 1991 | Link |
| Wiltsey | Timothy “Timmy” William | USA | Homicide | 1991 | Link |
| Wood | Brittney Nicole | USA | Missing | 2012 | Link |
| Wood, | Daniel Kenneth | USA | Homicide | 1954 | Link |
| Woodfolk | Quinn Renard | USA | Missing | 1998 | Link |
| Wyant | Jennifer Lynn | USA | Missing | 1980 | Link |
| Y | |||||
| Young | Helen Ruth Conwright | USA | Homicide | 1976 | Link |
| Young | Otha | USA | Homicide | 1996 | Link |
| Z | |||||
| Zahl | Christopher Allen | USA | Missing | 1994 | Link |
| Zaret | Leslie Sue | USA | Homicide | 1974 | Link |
| Zeigler | William Thomas | USA | Wrongful Conviction | 1975 | Link |