Lead Right and Circle To A Line
 

"Circle to a line" usually is preceded with
"Lead Right" and will be described that way here.

The specified couple (or "leaders") move to face the couple on their right,
join hands to make a circle of four, and rotate it to the left just half way.

The lead man only lets go with his left hand (all others stay joined)
and starts to lead the line by sliding straight to the left.

The other man will make an arch with his right hand to
allow his partner to duck through walking forward
(like a California Twirl) as they move into the line.