As in obvious stand-ins, stunt doubles, etc. For example, there was a Dynasty episode where Blake and Krystle come home to find Alexis has bought and taken over the Carrington mansion. John Forsythe rushes up the stairs to strangle Alexis and you get a good glimpse of Joan Collins' stunt double in a wig as he goes for her throat (they did insert shots (https://www.youtube.com/watch?v=Ber5znW3Gss) of Joan pretending to be strangled). :lol:

https://images.squarespace-cdn.com/content/v1/519e4faee4b0336e2ef84e3a/1398002259943-CD4V96ZRGYJBP8KKXFWQ/image-asset.jpeg?format=500w