Isobel's Intrusion. Isobel's Fancy, #4

This is part 4 of the Isobel's Fancy series, also bundled as a single book (search for "Isobel's Fancy" on this e-bookstore). With her recent encounters with the servants fresh in her mind, Isobel is unable to sleep. Wandering around the house in the dead of night, she finds herself outside the servants' room again. The door is unlocked... is she brazen enough now to open it? And what will she do once inside?This erotic interlude, the fourth in the "Isobel's Fancy" series, includes an extended MMMF bisexual menage encounter, and takes place in a setting reminiscent of Downton Abbey.