Two Suspects Are Connected
The named group contains exactly 2 Suspects (or Innocents), and those two are connected to each other — sharing an edge (4-connectivity, not diagonal). The constraint has two parts: the group total is exactly 2, and the two must be directly adjacent. In a linear group like a row or column, this rules out any pair of cells with an unoccupied cell between them (i.e., the two must be next to each other). Common mistake: confusing adjacency with proximity — two cells with one innocent cell between them are NOT connected under this clue, and diagonal neighbors do not satisfy it either.
Reading the examples
“Both suspects in row 1 are connected”
The clue says both suspects in row 1 are connected to each other. Given the revealed cells, the adjacency constraint forces Carol (Innocent).
“Both suspects in column A are connected”
The clue says both suspects in column A are connected to each other. Given the revealed cells, the adjacency constraint forces Grace (Innocent).
“Both suspects in the edge are connected”
The clue says both suspects in the edge are connected to each other. Given the revealed cells, the adjacency constraint forces Carol (Innocent).
“Both suspects in Y's neighbors are connected”
The clue says both suspects in Eve's neighbors are connected to each other. Given the revealed cells, the adjacency constraint forces Diana (Innocent).
“Both suspects to the left of Y are connected”
The clue says both suspects in to the left of Frank are connected to each other. Given the revealed cells, the adjacency constraint forces Diana (Suspect), Eve (Suspect).