I Believe in Love... Part 1—Series 28

9/10 A mass shooting at a Syrian restaurant sets off a puzzling crime for the Lyell team.

I Believe in Love... Part 2—Series 28

10/10 A gruesome crime leads the Lyell ever closer to discovering the identity of the shooter.

7/10 Trapped midair on a flight from Mumbai, Nikki races to find a cure for a deadly illness.

8/10 Other passengers begin to fall ill. Is there more to this sickness than meets the eye?

5/10 The hand of a woman is found in a canal. Can the Lyell team find her before it鈥檚 too late?

6/10 Nikki performs an unusual post-mortem, and the trail leads to a terrifying discovery.

3/10 A vicious hammer attack on an estate agent reveals a disturbing case for the Lyell.

4/10 Another hammer attack brings the Lyell team closer to uncovering long-buried secrets.

1/10 The body of an elderly woman found in a cave presents a disturbing mystery for the Lyell.

2/10 Benjamin searches for Gloria as Nikki鈥檚 discovery leads them closer to the truth.