Dirección: Tony Lo Bianco
Tres chicas y un anciano son asesinados brutalmente en una casa y en pocas horas. La policía sospecha de Vicent, el extraño conserje de noche. A pesar de tenerlo bajo vigilancia, se repiten los mismos asesinatos misteriosos.
Mike Connors
Lt. Alex Dinardo
Anne Archer
Kate Bridges
Leon Isaac Kennedy
Frank
Ian McShane
Vincent Hardwick
Ruth Ford
Irma Hornady
John Heard
Sid
Carrie Nye
Graziella
Maureen O'Sullivan
Marian Hardwick
Murray Hamilton
Jack Oberman
Val Avery
Dr. Richards
Chet Doherty
Edward
Sully Boyar
Sydney Blume
Karen Rushmore
Nadine Pepper
Rony Clanton
Barker
Beeson Carroll
Barry Moyer
Victoria Bass
Cynthia Oberman
Dick Boccelli
Benny
Fred Ford
Man at Bar
Yvonne Talton Kersey
Mamie
Harry Madsen
Lyman
Mike Connors
Lt. Alex Dinardo
Anne Archer
Kate Bridges
Leon Isaac Kennedy
Frank
Ian McShane
Vincent Hardwick
Ruth Ford
Irma Hornady
John Heard
Sid
Carrie Nye
Graziella
Maureen O'Sullivan
Marian Hardwick
Murray Hamilton
Jack Oberman
Val Avery
Dr. Richards
Chet Doherty
Edward
Sully Boyar
Sydney Blume
Karen Rushmore
Nadine Pepper
Rony Clanton
Barker
Beeson Carroll
Barry Moyer
Victoria Bass
Cynthia Oberman
Dick Boccelli
Benny
Fred Ford
Man at Bar
Yvonne Talton Kersey
Mamie
Harry Madsen
Lyman
Mike Connors
Lt. Alex Dinardo
Anne Archer
Kate Bridges
Leon Isaac Kennedy
Frank
Ian McShane
Vincent Hardwick
Ruth Ford
Irma Hornady
John Heard
Sid
Carrie Nye
Graziella
Maureen O'Sullivan
Marian Hardwick
Murray Hamilton
Jack Oberman
Val Avery
Dr. Richards
Chet Doherty
Edward
Sully Boyar
Sydney Blume
Karen Rushmore
Nadine Pepper
Rony Clanton
Barker
Beeson Carroll
Barry Moyer
Victoria Bass
Cynthia Oberman
Dick Boccelli
Benny
Fred Ford
Man at Bar
Yvonne Talton Kersey
Mamie
Harry Madsen
Lyman