e.g. abducting/killing by single persons
eg. abducting by organized criminals
see Operation Grange
see McCann's Find Madeleine Fund on Page→Unidentified People of Interest to the Inquiry (see also Mr.X).
Evidence from Witnesses
Physical Evidence
Indirect evidences
See also Possible Reconstruction of an Abduction of Maddie
See also refutation by Accidental Killing Theory.