Lifeline (S05E21)

S05E01 In Whom We Tryst S05E01 Dark So Early, Dark So Long S05E02 Going, Going, Gone! S05E02 Cold Trail S05E03 Thicker Than Water S05E03 A Step in Time S05E04 Kung Who? S05E04 Wine From These Grapes S05E05 Reading Between the Lines S05E05 Woman in the Shadows S05E06 Days Beyond Recall S05E06 Definitely Not Cricket! S05E07 Run Till Dark S05E08 The Glass Trap S05E09 A Choice of Evils S05E10 A Button for General D S05E11 The Man Outside S05E12 Murder Times Three S05E13 Catspaw S05E14 To Save a Dead Man S05E15 Nightshade S05E16 Babe in the Woods S05E17 The Sound of Murder S05E18 Moving Target S05E19 Cry Pigeon S05E20 A Walk in the Shadows S05E21 Lifeline S05E22 To Draw the Lightning S05E23 Scapegoat S05E24 Death in the Fifth Gear