Monday evening’s TV ratings are in.  Here’s a brief look at the highlights:

• Last night’s Robin Sparkles-infused episode of How I Met Your Mother garnered a season high with a 4.0 rating and 10.32 million viewers, which is up 8% from its last original episode’s 3.7 rating.
• After marking a promising rise with its second episode, last night’s installment of the new Fox serial killer series The Following dipped a bit with a 2.9 rating and 8.92 million viewers.  That’s a drop of 12% from last week’s 3.3 rating.  Read Allison’s recap of the episode right here.
• Over at The CW, the Sex and the City prequel series The Carrie Diaries hit a series high 0.7 rating and 1.55 million viewers, rising 40% from last week’s 0.5 rating.

Hit the jump for the full ratings report for Monday, February 4th, including Hawaii Five-0, Castle, Bones, 2 Broke Girls, and more.

FOX

• A new episode of the fan-favorite series Bones saw a decline with a 2.3 rating and 9.02 million viewers, dropping 12% from last week’s 2.6 rating.
• New series The Following saw a slight drop in viewership as well, garnering a 2.9 rating and 8.92 million viewers.  That’s down 12% from last week’s 3.3 rating.

CBS

• How I Met Your Mother saw a season high 4.0 rating and 10.32 million viewers for last night’s episode, making it the highest-rated program of the evening.  That’s up 8% from its last new episode’s 3.7 rating.
• In its season premiere, Rules of Engagement scored a 3.1 rating and 9.33 million viewers which is down 14% from last season’s finale rating of 3.6, but up 40% from last season’s premiere rating of 2.1.
• The comedy 2 Broke Girls notched a 3.6 rating and 11.21 million viewers, dipping 3% from its last new episode’s 3.7 rating.  It was the most-watched program of the night.
• Mike & Molly scored a 3.1 rating and 10.7 million viewers, down 6% from its last original episode’s 3.3 rating.
• Finally, the drama Hawaii Five-0 garnered a 2.3 rating and 9.63 million viewers, which is even with its last new episode’s performance.

ABC

• A new episode of Castle was down 10% from its last original’s 2.0 rating, scoring a 1.8 rating and 8.77 million viewers.

The CW

• The Carrie Diaries enjoyed a series high with a 0.7 rating and 1.55 million viewers, which is up 40% over last week’s 0.5 rating.
• 90210 was even with last week’s 0.4 rating and scored 790,000 viewers.